AAFM Boards Dermatology Practice Test 2026 - Free Dermatology Practice Questions and Study Guide

Tinea Versicolor, a common skin condition caused by an overgrowth of a fungus normally found on the skin, is primarily diagnosed through a Wood's lamp examination. During this examination, a special light is used to reveal changes in the skin's pigmentation. The fungus responsible for Tinea Versicolor produces specific substances that fluoresce under the Wood's lamp, typically appearing pale yellow or golden. This can help differentiate the condition from other skin disorders that may present with similar symptoms.

While visual inspection can also play a role in the diagnosis, the Wood's lamp provides an objective way to confirm the presence of the fungus that characterizes Tinea Versicolor. Skin biopsy and blood tests are not standard practices for diagnosing this condition; they are reserved for more complex cases or different skin issues altogether. Thus, the Wood's lamp examination stands out as a key tool for effectively diagnosing Tinea Versicolor.