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,
Acne is a common skin condition caused by the blockage of hair follicles by sebum (oil), dead skin cells, and bacteria. The blocked pores lead to whiteheads, blackheads, inflammatory papules or nodules (red, tender bumps), pustules (pus-filled bumps), and even cysts. Acne breakouts can occur at any age
Acne keloidalis nuchae is a chronic inflammatory condition which affects mainly Black men. Affected individuals develop pink to flesh colored, dome shaped papules and pustules around the hair follicles on the posterior scalp and neck. These firm, scar-like bumps can gradually enlarge and coalesce to
Atopic dermatitis is the most common form of eczema. It is a chronic, recurring rash characterized by dry, inflamed skin, and intense itching. Children are most commonly affected, but the condition can occur at any age. In infants, the rash most typically involves the cheeks. In young children, the creases
Bullous pemphigoid is an autoimmune skin condition. Affected individuals complain of significant itching and can develop an eczema-like rash, a hive-like rash, or large, fluid-filled blisters on the skin. Common areas of involvement include the groin, axillae (armpits), trunk, thighs, and forearms. The
Contact dermatitis is a form of eczema that develops after the skin comes in contact with a substance that acts as an irritant or allergen. The affected areas become red, inflamed, and itchy. Swelling, blistering, crusting, and oozing can also occur. Irritant contact dermatitis is the more common type,
Dermatitis herpetiformis is an autoimmune skin disease that causes recurrent, intensely itchy blisters to form on the elbows, knees, back, buttocks, and/or scalp. It is linked to the ingestion of gluten found in wheat. It can also occur with celiac disease and has been associated with thyroid disease.
Dermatomyositis is a rare disease that causes a skin rash and muscle weakness. The skin rash can present reddish to purplish, dusky discoloration and swelling of the eyelids, particularly the upper eyelids (heliotrope rash). A red rash may also appear on the chest, shoulder, neck or back. Affected individuals
