Gua sha and coin rubbing

1. Introduction

Version followed: gua sha as Arya Nielsen describes it (Gua Sha: A Traditional Technique for Modern Practice, 2nd ed., and her 2016 teaching notes), alongside the household coin-rubbing traditions as public-health and community sources describe them: Vietnamese cạo gió, Cambodian kos khyol (also spelled koah kshal or kors kha-yal), and Indonesian kerokan. The psychotherapist does not perform this method. This guide covers what the method is, who delivers it, its risks and evidence, and the therapist's own work: cultural meaning, family health practices and safeguarding. For Western instrument-assisted soft-tissue mobilisation, see tab 012 (IASTM).

What it is. Nielsen defines gua sha as instrument-assisted, unidirectional press-stroking of a lubricated body surface. It deliberately raises "transitory therapeutic petechiae", meaning small amounts of blood leave the vessels into the tissue under the skin. Other names for it include coining, spooning and scraping. [source: Elsevier publisher page for Nielsen's Gua sha; Nielsen 2016 notes] In the household versions, someone rubs oil or balm onto the back, neck, shoulders or chest, then scrapes the area firmly with the edge of a coin, spoon or similar object until red stripes appear. [source: CCHP 2010; The Conversation (kerokan); Cambodge Mag 2024]

How change is thought to happen (attributed). The traditions explain the practice in their own terms. These explanations are the traditions' concepts, not established physiology:

In East Asian medicine, "sha" can mean a dormant, hidden blood stasis. It also names the petechiae the treatment raises. Gua sha is used where blood stasis is thought to show as fixed or recurring pain. [source: Nielsen 2016 notes]
In Vietnamese, Cambodian and Indonesian folk understanding, illness comes from "bad wind" in the body, or from cold wind entering it. Indonesians call this masuk angin, "the entrance of wind". Scraping is meant to let the wind out, and the red marks show that it is leaving. [source: CCHP 2010; The Conversation; Cambodge Mag]
Nielsen reports, from physiology studies, increased surface microcirculation and anti-inflammatory signalling after treatment. She also says the pain-relief mechanism has not been identified. [source: Nielsen 2016 notes]
Anthropological commentary also points to the care and social contact of being treated by a relative or healer. [source: The Conversation, citing Foster & Anderson] [uncertain: secondary summary]

2. Framework

There is no psychotherapy protocol here. The framework below covers four things: the practice as described, who delivers it, safety and evidence, and the stages the psychotherapist's own work moves through.

2a. The practice as practitioners describe it (for recognition, not for the therapist to perform)

Professional gua sha (Nielsen): a smooth-edged instrument is pressed firmly over a lubricated area. Nielsen says the pressure should reach the fascia without causing pain. Strokes go in one direction, line by line, until sha appears. Rubbing a coin back and forth is described as a misapplication that can abrade the skin. Children are treated only with a responsible adult present. Patients get explanation, a handout and aftercare advice, including keeping the area protected from wind, cold and sun until the marks fade. [source: Nielsen 2016 notes] Stroke counts and timings are left out of this guide on purpose.
How the marks look and fade: the petechiae soon merge into ecchymosis, a bruise-like patch. They typically clear within a few days. Practitioners read the colour and the speed of fading as clinically meaningful. [source: Nielsen 2016 notes; The Conversation gives two to three days for kerokan]
Household cạo gió, kos khyol and kerokan: done at home by parents, other relatives, neighbours or local healers. Common products are camphor or menthol balms (Tiger Balm, Vicks), warm oil or coconut oil. The usual result is parallel red stripes, often along both sides of the spine. In Indonesia, a shallot with coconut oil may be used for children. [source: CCHP 2010; The Conversation; Cambodge Mag; Cambodia Daily] People use it for colds, flu, fever, headache, nausea, aches and low energy. [source: CCHP 2010; The Conversation; Cambodge Mag] These are the traditions' own uses, not established indications.

2b. Who delivers it and how they are regulated

In clinics, gua sha is mainly practised by acupuncturists and other practitioners of East Asian medicine. [source: Elsevier publisher page] Some US states name it in the acupuncture scope of practice. For example, New Jersey's rules list "gua sha scraping techniques" and cupping among the methods licensed acupuncturists may use (N.J. Admin. Code 13:35-9.12). A 2003 Maine bill also listed gua sha among the techniques of oriental medicine. [source: N.J. Admin. Code 13:35-9.12; Maine LD 263, 2003 (enactment not confirmed in the bill text)]
Nielsen's training is a certificate course for practitioners. Her stated rule is to use these techniques only if "trained by a qualified instructor". [source: Nielsen 2016 notes]
Gua sha is also offered in spa, beauty and massage settings. Whether it falls within a massage licence varies by jurisdiction. [uncertain: not verified] In Canada, only five provinces regulate massage therapy through a college: Ontario, British Columbia, New Brunswick, Newfoundland and Labrador, and Prince Edward Island. [source: HHR-RHS Canada massage therapists profile] Australia has no national registration for massage therapists. Instead, a National Code of Conduct covers unregistered health workers and is enforced by state complaints bodies; HaDSCO in Western Australia is one example. [source: HaDSCO 2022; AMT complaints page]
Household coining is family care and has no credentialing.

2c. Safety: contraindications and documented risks

Do not treat (Nielsen): broken or compromised skin (sunburn, rash, pimples, abrasions, swelling, recent injury, moles, raised lumps); areas where earlier marks have not yet faded; directly over the trachea, eyes or genitals. [source: Nielsen 2016 notes]
Caution, or check with the client's doctor first (Nielsen): anticoagulant or antiplatelet medicines; haemophilia or von Willebrand disease; pregnancy; menstruation; older or frail people; severe illness; around chemotherapy; diabetes; cancer; infants and children. [source: Nielsen 2016 notes]
Infection control: blood and other potentially infectious material can be drawn through the skin, even when no blood is visible. Instruments can carry bloodborne pathogens. Nielsen and colleagues propose hospital-standard protocols: single-use instruments where possible, high-level disinfection of reusable ones, gloves, and decanted lubricant. [source: Nielsen, Kligler & Koll 2012; Nielsen 2016 notes]
Complications reported for coining at home: minor burns are the most common. Rarer reports include severe burns, bruising, bleeding in the brain, camphor poisoning and kidney contusion. Using home remedies can also delay medical care. [source: CCHP 2010] Delicate skin, especially babies' skin, is a reason not to coin. Broken skin can scar. [source: Cambodia Daily]
[uncertain] Sources disagree on harm. Nielsen states that apart from misdiagnosis, no complications of properly performed gua sha have been reported. She attributes reported injuries to other practices, such as fire cupping, or to coincidental illness. CCHP lists the complications above for coining in general. The likely explanation is that the two sources describe different things: trained technique on one side, household practice with heated oils or coins and camphor products on the other. Treat household coining of infants as carrying real risk.
The best-documented harm in the paediatric literature is misdiagnosis: the marks are mistaken for physical abuse. [source: Wong et al. 1999; Killion 2017; CCHP 2010; Nielsen 2016 notes]

2d. Evidence status

A systematic review found seven controlled trials of gua sha for musculoskeletal pain, all from China and all at high risk of bias. Its conclusion: "Current evidence is insufficient to show that Guasha is effective in pain management." [source: Lee et al. 2010]
Physiology studies, such as microcirculation measured in small groups of healthy volunteers, describe what happens in the tissue. They do not show clinical benefit. [source: Nielsen 2016 notes]
Support for household coining for colds and fever comes mainly from testimonials. [source: The Conversation]
Gua sha is not a treatment for infection, cancer or any other physical disease. Clients should not delay medical care because of it. [source: CCHP 2010; Cambodia Daily]

2e. The psychotherapist's work: stages (no fixed session count) [synthesis]

Notice and ask. A cultural health history, or a client or child with stripe-like marks. Move on once you know which practice is involved, who did it, on whom, with what, and why.
Explore meaning. What the practice means to the client and family. Move on once you can state the client's own explanation in their terms.
Screen for safety. Physical-risk flags, plus a child-safeguarding or adult-safeguarding check. You need a clear decision: no concern, advice and referral, or a safeguarding consultation.
Act. Give advice, refer to a trained practitioner or a doctor, or follow safeguarding procedures.
Integrate and follow up. Work with the body experience, the family relationships, and any experience of being suspected or accused.

3. Guiding principles

The concepts belong to the tradition. Wind, sha, qi and blood stasis are described as the client's or the tradition's beliefs, never as fact. Practically: say "in your family's understanding, the wind leaves through the skin", not "it releases the wind". [source: concepts as described in CCHP 2010 and Nielsen 2016 notes]
Ask before you interpret. Child-care and health providers are advised to learn the healing practices of the communities they serve, and to ask families about traditional treatments so they read marks accurately. Practically: make traditional health practices a routine question at intake. [source: CCHP 2010]
A careful differential, not an automatic conclusion. Unfamiliar examiners have mistaken these marks for abuse. Clinicians should understand the cultural context before concluding abuse. Practically: consider coining among the possible explanations for linear marks on the back or chest, and do not assume it is the answer. [source: Wong et al. 1999; Killion 2017]
Cultural explanation never overrides the duty to protect. NICE says a cultural explanation "should not justify hurting a child or young person". An explanation that is implausible, inadequate or inconsistent with the injury still raises concern. Practically: your safeguarding duties stay the same whatever culture the family belongs to. Culture shapes how you ask, not whether you act. [source: NICE CG89; Barnsley procedure]
Seek explanations openly and without judgement. Ask both the parent or carer and the child. Record exactly what you see and what is said. Discuss concerns with a named safeguarding lead. Practically: write down the explanation verbatim and consult; do not decide alone. [source: NICE CG89]
Babies are different. Any bruising in a baby who is not yet independently mobile is a matter for inquiry and referral under local procedures. A decision that abuse did not occur is made with extreme caution and never alone. [source: Barnsley procedure]
Stay within your own scope. Psychotherapy codes prohibit sexual contact and require competence and appropriate referral. Mainstream talk-therapy codes do not authorise hands-on treatment. Practically: refer for gua sha; never perform it in session. [source: UKCP 2019 items 4, 23–24; BACP 2018 paras 13, 34; HCPC SOP 1.1, 2.7; APA 2.01, 10.05]
Consent to touch is ongoing. Body-psychotherapy codes call for informed consent before any touch, the right to refuse or stop at any time, and the statement that genital or other sexual touch "is always inappropriate". Practically: prepare clients to expect the same from any practitioner they see. [source: USABP Code of Ethics VIII; EABP 2020 Principle 7]
No disease claims. Health claims are reported with their evidence status. Practically: do not endorse coining for fever or infection, and encourage medical review of significant illness. [source: Lee et al. 2010; CCHP 2010]

4. Intervention inventory

The psychotherapist does not deliver gua sha or coining. The interventions below are the psychotherapist's own. Each one draws on the sources named in it. Where steps go beyond those sources, they are marked [synthesis]. All example language is illustrative.

4.1 Routine cultural health history (asking about family healing practices)

Purpose / when: at intake, in family work, and whenever a client describes illness, pain or caring for a sick child. Asking routinely means marks are read in context later, and the family is not singled out. [source: CCHP 2010 advises asking families about traditional treatments]
Steps: (1) Ask about every way the family looks after health: doctors, pharmacists, herbs, diet, cupping, pinching, coining, gua sha, prayer. (2) For each, ask who does it, on whom (adults, children, babies), what is used (coin, spoon, stone; oil or camphor balm) and for which complaints. (3) Ask whether a doctor is also consulted, and when. (4) Note the client's own name for the practice and record it accurately. (5) Do not comment on effectiveness at this stage. [synthesis, building on CCHP 2010]
Example language (illustrative): "Many families have their own ways of looking after someone who's unwell, like scraping, cupping, herbs or special foods. What does your family do when someone catches a cold or has a headache?" "Who usually does that, and do the children have it too?"
Watch for: guarded or very brief answers. These may reflect earlier experiences of being suspected, so normalise the question. Note any use on babies or toddlers, any use of heated oil or coins, and any camphor products near small children (CCHP lists burns and camphor poisoning among complications). It is working when the client describes the practice freely, in their own words.

4.2 Exploring the cultural and personal meaning of the practice

Purpose / when: when coining or gua sha matters to the client, for example as a link to a parent, a form of care, a marker of identity, or a source of conflict across generations or with a partner.
Steps: (1) Invite the client's explanatory model: what causes the illness (wind, cold, sha) and what the scraping does, in the client's words. (2) Explore relationships: who did it for them as a child, and what it felt like to be cared for that way. (3) Explore what has changed since migration, such as hiding marks at school or work, or children refusing it. (4) Explore ambivalence: comfort and closeness on one side, pain or embarrassment on the other. (5) Reflect the meaning back without endorsing or disputing the health claim. [synthesis; explanatory concepts from CCHP 2010, The Conversation, Cambodge Mag; the care and social-contact element is noted by The Conversation]
Example language (illustrative): "When your mother did cạo gió for you, what did that mean to you?" "In your family's understanding, what is happening when the red lines come up?" "It sounds like it's both a way she showed care and something you felt you had to hide at school."
Watch for: shame about marks, grief for a parent or a lost homeland, and conflict between generations. Also watch for your own reactions, whether squeamishness or romanticising. It is working when the client can hold the practice's meaning alongside a realistic view of its safety.

4.3 Responding to marks seen on an adult client

Purpose / when: a client shows, mentions or accidentally reveals linear red or purple marks on the back, neck, shoulders or chest.
Steps: (1) Ask open, non-judgemental questions about how the marks came about. (2) If the client names coining or gua sha, ask who did it and whether it was wanted. (3) Treated marks are expected to fade within days. Unexplained, patterned, repeated or ill-fitting injuries call for an ordinary assessment of domestic abuse or self-harm. Wong et al. warn that these marks have been misread as abuse in domestic-violence assessments, so misreading can happen in either direction. (4) Screen the physical risk flags in 2c (anticoagulants, bleeding disorders, broken skin, pregnancy, frailty), and suggest medical advice if any apply. (5) Record what you saw and what the client said. [source: Wong et al. 1999; Nielsen 2016 notes; synthesis for steps 1–3 and 5]
Example language (illustrative): "I noticed some marks on your neck. Would you be willing to tell me how they happened?" "Was that something you asked for, and did it feel okay?"
Watch for: marks the client did not choose, a partner controlling the client's health care, broken or infected skin, and use alongside blood thinners. It is working when you have a clear explanation that fits what you saw, or a clear next step.

4.4 Culturally informed safeguarding assessment when a child has marks

Purpose / when: a child in your care, a client's child, or a child you see in family work has stripe-like marks, and coining is mentioned or possible.
Steps: (1) Follow your local child-protection procedure. Culture changes how you ask, not whether you act. (2) Seek an explanation from the parent or carer and from the child, in an open and non-judgemental way. (3) Record exactly what you observed, and the explanation verbatim, using a body map where your service has one. (4) Judge whether the explanation is suitable: it should be plausible and adequate, and consistent with the site and pattern of the marks, the child's developmental stage and the accounts given. (5) Discuss with your named or designated safeguarding lead. Do not decide alone. (6) If the explanation is unsuitable, or other features raise concern, refer to children's social care or child protection services as your procedure directs. (7) Tell the parents about a referral unless doing so would put the child at risk. [source: NICE CG89; Barnsley procedure] (8) Even where coining is confirmed, consider physical harm such as burns or broken skin, and any delay in getting needed medical care. A cultural explanation "should not justify hurting a child". [source: NICE CG89; CCHP 2010] (9) Offer the family information on safer practice and on seeing a doctor for illness (see 4.7). [source: CCHP 2010; synthesis]
Example language (illustrative): to a parent: "I've noticed some red lines on Minh's back. Can you tell me what happened?" "Some families use coining when a child is sick. Is that something you do? Who did it, and when?" To a child: "Can you tell me how your back got these marks?" When explaining a safeguarding step: "When I see marks on a child, I always talk it through with a colleague whose job is keeping children safe. I do this with every family, and I'd like to be open with you about it."
Watch for: explanations that change between tellings or between carers; marks in places or shapes coining does not explain; injuries beyond the expected stripes, such as burns or broken skin; any other alerting features of maltreatment; and a child's distress or reluctance to speak. It is working when you have a documented, consulted decision, and the family understands the process.

4.5 Infants and non-mobile babies

Purpose / when: marks of any kind on a baby who cannot yet crawl, bottom-shuffle, pull to stand, cruise or walk.
Steps: (1) Treat any bruising or marks, including marks reported but no longer visible, as a matter for inquiry and referral under your local procedure. (2) Do not accept a cultural explanation in place of assessment by a paediatrician and social worker. (3) Get emergency care if the baby seems unwell. (4) Record the marks and the explanation, then refer. [source: Barnsley procedure, a local UK example; check your own area's equivalent] Babies' delicate skin is itself a reason not to coin. [source: Cambodia Daily]
Example language (illustrative): "With babies this young, any mark on the skin has to be checked by a children's doctor. That's the rule for every family. I'm going to arrange that today, and I'll explain each step to you."
Watch for: pressure on you to accept the explanation and skip referral, and a baby who is unwell. It is working when the referral is made promptly and documented, and the parents have been told.

4.6 Supporting a family during, or after, a child-protection inquiry

Purpose / when: parents have been reported, questioned or investigated because of coining marks, now or in the past. Parents who use coining have been accused of child abuse. [source: CCHP 2010]
Steps: (1) Acknowledge the experience and its effects: fear, shame, anger, and distrust of services. (2) Explain your own role and your limits openly. You cannot promise confidentiality where a child's safety is involved. (3) Help the family understand the inquiry process and get language support, an interpreter or advocacy. (4) Where coining is confirmed, work with the family on ways to keep the meaning of care while lowering risk to children, for example not coining babies, no heat, no broken skin, and seeing a doctor for fever (see 4.7). (5) Work through any lasting effects on attachment and help-seeking, such as fear of taking children to the doctor. [synthesis]
Example language (illustrative): "You were trying to look after your daughter the way your own mother looked after you, and then you were treated as if you'd hurt her. That must have been frightening." "I'll always be honest with you about what I have to pass on, and why."
Watch for: the family withdrawing from health care, a child caught between home and school, and your own wish to side completely with the family or completely with the service. It is working when trust with you is repaired, and the family stays in contact with medical care.

4.7 Safety psychoeducation for clients who use or receive coining or gua sha

Purpose / when: a client uses coining at home, or gives it to others, or plans to see a practitioner.
Steps: (1) Share, as information rather than instruction, the cautions that practitioner sources list: no treatment over broken or irritated skin or recent injury; check with a doctor first if on blood thinners, with a bleeding disorder, in pregnancy, during cancer treatment, or if frail or very unwell; extra care with infants and children. [source: Nielsen 2016 notes] (2) Mention the complications reported with household coining: burns, camphor poisoning, and in rare cases serious internal injury. Keep camphor products away from small children. [source: CCHP 2010] (3) Reinforce the CCHP advice for parents: weigh the safety and benefit, check the practitioner's qualifications, and do not let a home remedy delay medical care. [source: CCHP 2010] (4) Explain infection risk. If the client sees a practitioner, they can ask about single-use or properly disinfected instruments. [source: Nielsen, Kligler & Koll 2012] (5) Give no technique, pressure or timing advice. [synthesis]
Example language (illustrative): "I'm not going to tell you whether to use it. I'd just like you to know the situations where practitioners themselves say to be careful." "If a child has a high fever or seems really unwell, could you get a doctor to see them, even if you also do cạo gió?"
Watch for: the client feeling criticised, and reliance on coining for symptoms that need medical care. It is working when the client can name the situations in which they would see a doctor.

4.8 Referral and collaboration with a trained practitioner

Purpose / when: an adult client wants gua sha for pain or tension, and you are discussing where to go.
Steps: (1) Suggest a practitioner who is licensed or registered where they practise. In many places that means an acupuncturist or East Asian medicine practitioner whose scope includes gua sha (for example under New Jersey's acupuncture rules), and who has completed specific training. (2) Encourage the client to tell the practitioner about medications, bleeding problems, pregnancy and skin conditions. (3) With the client's consent, agree what will be shared between you and the practitioner, especially about trauma and touch. (4) Present the evidence honestly: trial evidence for pain is insufficient. [source: N.J. Admin. Code 13:35-9.12; Nielsen 2016 notes; Lee et al. 2010; EABP 2020 6.b on parallel services] (5) Accept no referral fees. [source: EABP 2020 5.d]
Example language (illustrative): "If you want to try gua sha, I'd suggest someone licensed to do it here, such as an acupuncturist trained in it. Tell them about your medication. And it's okay to ask them to explain what they're going to do before they start."
Watch for: practitioners who make disease-cure claims or skip a health history, and clients using bodywork to avoid medical review. It is working when the client chooses a credentialed practitioner and reports a clear consent process.

4.9 Preparing a trauma-affected client for touch-based treatment

Purpose / when: a client with a history of physical or sexual abuse, medical trauma, or having had coining forced on them as a child, is considering gua sha or similar treatment.
Steps: (1) Explore what touch means to them now, and which body areas, positions such as lying face down, or clothing changes feel hard. (2) Rehearse consent statements and a stop signal. Body-psychotherapy codes affirm the right to refuse or end touch at any time. (3) Plan for the visible marks: how the client may feel seeing them, and what they will say to others. (4) Suggest they ask for a chaperone, or bring a trusted person, where appropriate. Nielsen treats children only with a responsible adult present. (5) Make clear that no legitimate practitioner touches genitals or behaves sexually, and that genital areas are listed as no-treatment zones. [source: USABP Code VIII.2–VIII.5; Nielsen 2016 notes; synthesis for steps 1–4]
Example language (illustrative): "What would you need to feel in charge on the table? Let's practise how you'd say 'stop' or 'lighter'." "The marks may look like bruises for a few days. How might it feel to see them?"
Watch for: dissociation or freezing while describing touch, the client feeling obliged to go ahead, and memories brought up by the marks. It is working when the client can say what they will and won't accept, and has a plan for afterwards.

4.10 Integrating the body experience in psychotherapy

Purpose / when: after a client has had gua sha or coining, if they want to talk about it.
Steps: (1) Ask about the whole experience: sensations, emotions, memories, and the relationship with whoever treated them. (2) Explore how they read the marks. They may be a sign of illness leaving, evidence of being cared for, or a reminder of injury. (3) Link this to the themes of therapy, such as care, control and the body. (4) Note any adverse effects and pass them on (see 4.11). [synthesis]
Example language (illustrative): "When your aunt did kerokan for you last week, what came up for you, in your body and in your feelings?" "What do the marks say to you?"
Watch for: strong emotional reactions to the marks, a pattern of needing scraping to cope with distress (The Conversation describes perceived dependence), and use as a form of self-injury. If self-injury is suspected, follow standard risk assessment. It is working when the experience becomes something the client can reflect on and use.

4.11 Recognising and passing on adverse effects or boundary violations

Purpose / when: a client reports pain, broken skin, infection, burns, unusual bruising, feeling faint, or any distressing or sexual conduct by a practitioner.
Steps: (1) For physical effects such as spreading redness, fever, broken or weeping skin, burns, or bleeding while on blood thinners: advise medical review, urgently if severe. [source: CCHP 2010; Nielsen 2016 notes; synthesis for the triage] (2) For boundary violations, take the report seriously and record it. Explain the complaint routes: the practitioner's licensing board (such as a state acupuncture board), their professional association, or a health complaints body. In Australia, state health complaints entities handle unregistered practitioners under the National Code, and associations such as AMT run discipline processes. In Canada, the provincial colleges handle complaints where massage is regulated. [source: HaDSCO 2022; AMT complaints page; CBC 2021; HHR-RHS Canada] (3) Follow your own safeguarding duties where a child or an adult at risk is involved. (4) Offer support with the emotional effects. [synthesis]
Example language (illustrative): "That skin should be checked by a doctor today." "What you describe was not okay, and it's not part of any legitimate treatment. Would you like help working out who to report it to?"
Watch for: the client blaming themselves, and delay in getting medical care. It is working when medical care is reached and the client knows how to make a complaint.

4.12 Holding your own boundary: not performing it yourself

Purpose / when: a client asks you to do gua sha, or to check their marks by touching them, or you have trained in bodywork.
Steps: (1) Decline hands-on work within psychotherapy unless your own professional code explicitly allows touch and you hold the relevant training. Mainstream talk-therapy codes have no touch provision but do require you to stay within competence, avoid harmful dual relationships, and refer. Body-psychotherapy codes regulate touch through assessment, informed consent and documentation. (2) Look at visible marks only, and only with consent. Do not examine a child's body yourself; that is a job for medical safeguarding staff. (3) Refer as in 4.8. [source: UKCP 2019 items 8, 23–24; BACP 2018 paras 13, 33; USABP VIII.1–VIII.2; EABP 2020 Principle 7; Barnsley procedure on medical assessment]
Example language (illustrative): "I'm not trained to do gua sha, and keeping hands-on treatment separate from our sessions protects the work we do here. I can help you find someone qualified."
Watch for: your own pull to help directly, and dual-role confusion. It is working when the boundary is held and the client still feels cared for.

4.13 Cross-reference: instrument-assisted soft-tissue work

Gua sha is one source of the modern Western instrument-assisted techniques. Nielsen's book covers the history of related early Western techniques. For Graston-type instrument-assisted soft-tissue mobilisation (IASTM), see tab 012 (IASTM) for its delivery, regulation and safety. [source: Elsevier publisher page; the lineage link to IASTM is [uncertain: not verified]]

5. Handling problems

Most of this section is [synthesis]. Points drawn from sources are tagged.

The family feels accused and closes down. Explain that you ask every family about home remedies and that asking is routine (4.1). Separate your curiosity about the practice from any safeguarding step, and be open about both. If you have to refer, say so honestly and stay involved. CCHP notes that parents using coining have been accused of abuse, so expect wariness.
The therapist's own bias, over-calling or under-calling. Two errors are possible. One is reporting a culturally explained, minor, fading mark as abuse without assessment; Wong et al. and Killion describe this misdiagnosis. The other is accepting "it's coining" for marks it does not explain; NICE and the Barnsley procedure reject cultural explanations that are unsuitable or that would justify harm. Guard against both by recording observations exactly and consulting a safeguarding lead every time. [source: Wong et al. 1999; Killion 2017; NICE CG89; Barnsley procedure]
Language barriers. Use a professional interpreter, not the child or another family member, for any safeguarding conversation. Ask for the client's own term (cạo gió, kos khyol, kerokan, gua sha), because the meaning may differ between families.
Coining is used instead of medical care for serious illness. Name the concern directly and with care. Ask about warning signs that would prompt seeing a doctor, and agree a plan. For a child who is seriously ill, act on your safeguarding and emergency duties. CCHP warns that home remedies can delay conventional treatment. [source: CCHP 2010]
The client asks you to perform it, or to check their skin. Hold the boundary (4.12). Explore what the request means, for example a wish for care, or testing whether you accept their culture.
Marks on an adult suggest coercion. Gua sha that is unwanted or forced is a boundary violation and may be abuse. Assess domestic abuse in the usual way. Wong et al. warn against misreading these marks in domestic-violence assessments, so take the client's own account as your starting point. [source: Wong et al. 1999]
Perceived dependence or compulsive scraping. Some clients scrape or seek scraping frequently, even without symptoms, and The Conversation reports perceived dependence. Look at what function it serves: anxiety relief, health anxiety, or self-soothing. Consider whether it overlaps with self-injury or skin-picking. Address the underlying distress, and suggest medical review if the skin is damaged. [source: The Conversation]
Distress caused by the marks. Marks can trigger body-image distress, memories of abuse, or worry about what others think. Prepare the client beforehand (4.9) and work with the reaction afterwards (4.10).
Conflict between generations. A parent may insist on coining a teenager who refuses, or a grandparent may coin a baby against the parents' wishes. Use family work to separate respect for the tradition from consent: a young person's refusal counts. The cautions for infants also apply here (4.5). [Cambodia Daily notes that babies' delicate skin is a reason not to coin]
Rupture after a safeguarding referral. Name the rupture. Explain the duty without being defensive. Acknowledge the family's experience and keep offering sessions. Consider whether a different worker should hold the safeguarding role, if your service allows it.
Practitioner claims gua sha cures disease. Restate the evidence status: insufficient trial evidence for pain, and none for curing disease. Support the client to keep up medical care. [source: Lee et al. 2010]
Uncertainty about local law. Who may legally practise gua sha, and whether coining marks on a child must be reported, depend on jurisdiction. Check your local child-protection procedure and the relevant regulator's scope rules. [uncertain: varies by jurisdiction]

Sources

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