Question

A patient experiences fragile skin after sun exposure after mechanical trauma, causing erosions and bullae. this is most likely:

a) herpes sumplex
b) PCT
c) atopic dermatitis
d) melanoma

Answer 1

The most likely diagnosis for a patient with sun-sensitive, fragile skin that produces erosions and bullae is Porphyria Cutanea Tarda (PCT), a condition causing increased photosensitivity and skin fragility.

Step-by-step explanation:

If a patient experiences fragile skin, erosions, and bullae after sun exposure and mechanical trauma, the most likely diagnosis is Porphyria Cutanea Tarda (PCT). PCT is a type of porphyria that affects the skin, leading to photosensitivity, where the skin becomes susceptible to damage from the sun's UV light. This can result in fragile skin that blisters and tears easily, particularly on the backs of the hands and forearms. It is unrelated to the conditions listed in the other options, such as herpes simplex (a viral infection), atopic dermatitis (an inflammatory skin condition), and melanoma (a type of skin cancer).