Pityriasis versicolor, also called tinea versicolor, is a common superficial fungal infection caused by Malassezia yeast that normally lives on the skin. Under certain conditions such as excessive sweating, humid weather, oily skin, or reduced immunity, the yeast overgrows and causes discoloured patches on the skin.
The condition commonly affects the chest, back, shoulders, neck, and upper arms. Patients may notice white, brown, pink, or slightly scaly patches that become more prominent after sun exposure. Mild itching may sometimes occur, although many patients remain asymptomatic.
Pityriasis versicolor is more common in adolescents and young adults due to increased oil gland activity. It is not contagious and does not spread through casual contact. Diagnosis is usually clinical, though a dermatologist may use dermoscopy or microscopic examination for confirmation.
Treatment includes antifungal creams, shampoos, lotions, or oral antifungal medications depending on the severity and recurrence. Selenium sulfide shampoo, ketoconazole shampoo, and topical azole creams are commonly prescribed. Even after successful treatment, skin colour may take several weeks or months to return to normal.
Recurrence is common, especially in hot and humid climates. Preventive treatment during summer months and maintaining proper hygiene can help reduce flare-ups. Avoiding excessive sweating and wearing breathable cotton clothing may also help.
If you are noticing white or dark patches on your skin that do not improve, consult DermcareMD Skin and Hair Clinic by Dr Neha Athalye for accurate diagnosis and effective treatment of pityriasis versicolor.
