Vitiligo and Tinea Versicolor: Differences

The main differences between vitiligo and pityriasis versicolor (tinea versicolor) are reflected in the following aspects: 1. Different causes: Vitiligo is primarily caused by abnormalities in the body's immune system, and may be associated with genetic factors, neuroendocrine disorders, and environmental factors, although the exact cause is not yet fully understood. Pityriasis versicolor, also known as tinea versicolor, is mainly caused by Malassezia fungi invading the stratum corneum of the skin, and is usually associated with factors such as excessive sweating and humid environments. 2. Different symptoms: The main symptom of vitiligo is the appearance of white patches of varying sizes on the skin, with clear edges, which may be accompanied by reduced pigmentation of hair, leukoplakia of mucous membranes, nervous system disorders, and immune dysfunction. In contrast, pityriasis versicolor primarily presents as macules; initially appearing as pinpoint spots with variable colors, which gradually enlarge as the condition progresses, and may also be accompanied by itching, scaling, and lesions of the genital mucous membranes. 3. Different treatments: Treatment for vitiligo includes various methods such as topical therapy (e.g., corticosteroid ointments), oral medications (e.g., immunomodulatory drugs), phototherapy, and surgical treatment. Psychological therapy is also necessary to reduce the patient's psychological stress. Treatment for pityriasis versicolor focuses on the use of topical and oral antifungal medications, and it is also important to keep the affected area dry and clean.