Unsuspecting Plaque on the Forearm: A Diagnostic Challenge.

Microcystic adnexal carcinoma (MAC) is a rare, slow-growing, locally aggressive malignant, and recurring appendageal tumor. Prolonged UV exposure, immunosuppression, and radiotherapy are a few frequently associated risk factors. MAC classically presents as an asymptomatic skin coloured plaque on the face.

The role of serum S100B and serum thyroid stimulating hormone levels in vitiligo.

Vitiligo is a depigmenting disorder characterized by melanocyte loss, which results in pigment dilution of the skin. Vitiligo is commonly associated with thyroid disorders and thyroid stimulating hormone (TSH) is a sensitive marker to detect thyroid disorders. S100B is damage associated molecular pattern (DAMP) molecule released when there is melanocyte damage.