What is the difference between pityriasis versicolor and vitiligo?

Pityriasis versicolor and vitiligo differ in several aspects: 1. In terms of skin symptoms, pityriasis versicolor (also known as tinea versicolor) mainly presents as light brown or pale patches, with fine, powdery scales on the surface and indistinct borders. It commonly occurs on areas rich in sebaceous glands, such as the neck, upper chest, and back. In contrast, vitiligo manifests as white patches on the skin with clearly defined borders and no scaling. The affected areas in vitiligo do not follow a specific pattern. 2. Regarding causes, pityriasis versicolor is primarily caused by fungal infection, while vitiligo is associated with multiple factors including heredity, autoimmunity, and neurological or mental conditions. 3. In treatment approaches, pityriasis versicolor is mainly treated with antifungal medications, whereas vitiligo requires comprehensive treatment strategies tailored to each patient's specific condition. If symptoms of skin pigmentation loss occur, prompt medical consultation is recommended for accurate diagnosis and treatment.