Yellow Nail Syndrome — SCE Dermatology MCQ
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Correct answer: E — Yellow nails, bronchiectasis, lymphoedema
The best answer is “Yellow nails, bronchiectasis, lymphoedema”. Nail findings localise disease to matrix, bed or periungual tissue; a new changing longitudinal pigmented or erythronychic band requires specialist assessment because benign and malignant causes overlap. The alternatives “Yellow nails, hepatitis, pruritus”, “Yellow nails, psoriasis, arthritis”, “Yellow nails, diabetes, neuropathy”, “Yellow nails, renal failure, anaemia” are clinically adjacent possibilities, but they do not fit the defining morphology, distribution, histopathology, risk signal or management sequence in this stem.
Reference: DermNet specialist nail terminology reference: https://dermnetnz.org/topics/nail-terminology