SAQ 1 — Classification, prevalence and the bedside safety conversation

Stem (20 marks; suggested 15 minutes): ^[1]

A four-year-old child of South Asian heritage presents with three weeks of abdominal pain, constipation and lethargy. The blood count shows a microcytic anaemia. On direct, non-judgemental questioning, the mother reveals the child has been taking an Ayurvedic preparation "for strength" for two months. Separately, the mother of a 10-year-old with epilepsy asks whether the St John's wort she has started giving him "for mood" is safe alongside his antiseizure medicines. ^{[8] [5]}

(a) Define complementary and alternative medicine (CAM), name the five CAM domains, and classify the two products above into the most relevant domain. (8 marks) ^[1]

(b) Outline the stepwise bedside safety conversation you would have with each family, and state why routine, non-judgemental asking is the single most important intervention. (8 marks) ^[4]

(c) For the first child, state the most likely diagnosis, the first-line investigation, and one immediate management step. (4 marks) ^[6]

Model answer — SAQ 1

(a) Definition, five domains and classification (8 marks). ^[1]

• Definition — CAM is a diverse group of health systems, practices and products not presently considered part of conventional biomedicine: complementary when used alongside conventional care, alternative when used instead of it, integrative when evidence-based CAM is combined with conventional care in a coordinated way. (2 marks)
• Five domains — (1) biologically based therapies (herbs, botanicals, vitamins, supplements); (2) mind-body medicine (meditation, yoga, hypnosis); (3) manipulative and body-based practices (massage, chiropractic, osteopathy); (4) energy therapies (Reiki, biofield); (5) whole medical systems (Ayurveda, traditional Chinese medicine, homeopathy, naturopathy, Indigenous healing). (5 marks)
• Classification — the Ayurvedic preparation is a whole medical system product (Ayurveda) and is the principal source of heavy-metal contamination; the St John's wort is a biologically based therapy (botanical) and is the principal source of herb-drug interactions. (1 mark) ^{[1] [7]}

(b) Bedside safety conversation (8 marks — the six steps, 1 mark each, capped at 8). ^[4]

1. Ask respectfully and routinely — use open, normalised wording ("Lots of families give their children herbs, vitamins or traditional remedies — does your child take any?") rather than closed or judgemental questions. ^[4]
2. Document every remedy — name, dose, frequency, route, source and recommender, in the same place as conventional medicines. ^[4]
3. Screen for interactions and contamination — for the St John's wort, check against the antiseizure medicines for CYP3A4 interactions; for the Ayurvedic preparation, consider heavy-metal contamination. ^[5]
4. Assess the evidence and the risk — is it directly harmful; is it substituting for proven care; is the child particularly vulnerable? ^[4]
5. Counsel honestly and collaboratively — explain the assessment in plain language, respect the family's beliefs, use shared decision-making; do not dismiss CAM wholesale. ^[4]
6. Coordinate and follow up — integrate agreed safe CAM, arrange follow-up, report adverse events. ^[4]

Routine, non-judgemental asking is the single most important intervention because non-disclosure is the default — a parent who fears disapproval will not volunteer CAM use, so the only way to surface the hidden pathways is to ask openly and routinely. (credit within step 1) ^[1]

(c) Diagnosis, investigation and immediate management (4 marks). ^[6]

• Most likely diagnosis — lead poisoning from a contaminated Ayurvedic preparation; the abdominal pain, constipation, lethargy and microcytic anaemia are the classic paediatric presentation. (1 mark) ^[8]
• First-line investigation — a venous blood lead level (with arsenic and mercury levels if the exposure history suggests them); basophilic stippling on the blood film supports the diagnosis. (2 marks) ^[6]
• Immediate management step — stop the Ayurvedic product and involve the toxicology service (chelation is guided by the blood level and specialist advice; supportive care is the backbone). Arrange for the product to be tested and notify public health. (1 mark) ^[8]

SAQ 2 — Herb-drug interactions, homeopathy and the regulatory picture

Stem (20 marks; suggested 15 minutes): ^[5]

A fellowship examiner asks: "Why does complementary and alternative medicine sometimes harm children, and how should clinicians and regulators respond?" ^{[1] [4]}

(a) Describe the four pathways by which CAM use harms children, giving a named example of each. (10 marks) ^[7]

(b) Summarise the evidence on homeopathic products for children, and describe the regulatory frameworks in the WHO, UK, Australia and the United States. (10 marks) ^[10]