In the world of dermatology, few classification systems are as fundamental—and as frequently tested—as the scale. Developed in 1975 by Thomas B. Fitzpatrick, a Harvard dermatologist, this system classifies human skin color based on its response to ultraviolet (UV) light exposure, specifically its tendency to burn versus tan.
The most common MCQ trap involves phenotype versus genotype . A person with Type III skin may look similar to a Type IV, but their history of burning determines the type. fitzpatrick dermatology mcq
This is a goldmine for board-style questions. In the world of dermatology, few classification systems
A Fitzpatrick Type III patient starts tretinoin 0.05% cream for photoaging. She calls with burning and peeling after 2 uses. The most appropriate next step is: A) Discontinue retinol permanently. B) Add a topical steroid to reduce inflammation. C) Reduce frequency to twice weekly and use a moisturizer. D) Increase strength to accelerate retinization. The most common MCQ trap involves phenotype versus genotype
Explanation: In darker phototypes (V-VI), highly focused excimer laser (308 nm) can inadvertently darken normal skin around the vitiligo patch (perilesional hyperpigmentation), making the contrast worse. Alternatively, if over-treated, it can cause hypopigmentation of normal skin. This is a classic tricky MCQ.
The breadth of dermatology is vast. A comprehensive review using Fitzpatrick questions will cover the following high-yield domains: