Vitiligo is a skin disease that causes white patches on areas of the body where melanocytes are destroyed. The exact cause is unknown but may involve melanocytes self-destructing or being triggered by events like sunburn or stress. It affects people of all races and can be hereditary. Symptoms include white patches on the armpits, groin, around the mouth, eyes, and navel. Treatments include medications taken orally or topically but not all are suitable and some have side effects, and results may not appear for a long time.