Derm SAQs ·
Patch testing and contact dermatitis work-up — SAQ
On this page
Study tools
Write your answer
Saved on this device. No marking — you are the marker.
Stem
A 34-year-old hairdresser has 18 months of chronic hand and eyelid eczema. Wet work is heavy; she dyes clients’ hair daily and recently had a severe scalp flare after her own permanent dye. Topical steroids help briefly. You plan specialist patch testing.
Questions
a) State the preferred anatomic site for standard patch testing and the usual chamber removal time. (2 marks)
b) List the standard reading time-points and name two allergen groups that classically require a late (D7) reading. (2 marks)
c) Outline how you would grade a reaction using the ICDRG scale and how you assign clinical relevance. (3 marks)
d) Name two high-yield series/allergen categories you would add beyond a generic baseline for this occupational history, and one major pitfall that could produce false positives or uninterpretable multiples. (3 marks)