Vitiligo is an autoimmune disease which causes the loss or inactivation of pigment producing cells in the skin, resulting in light or white patches of skin and hair. The degree and severity of pigment loss can vary from person to person. In some, it is localized to a small area or streak. In others, the…
Acanthosis nigricans presents as a darkening and velvety thickening of the skin, most commonly affecting the neck, armpits, and groin region. It is most commonly associated with obesity and insulin resistance; people who have acanthosis nigricans are more likely to develop diabetes. In very rare instances, it can be associated with an internal cancer such…