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,

Urticaria is the medical term for hives - a common skin rash which presents with itchy pink welts. The welts can vary in size, shape, and distribution. A defining characteristic is that the individual lesions are transient, appearing and resolving within a 24 hour period. So, even though an individual

Stretch marks are a type of scar that occurs when the skin stretches rapidly. Examples include: growth spurts during puberty, pregnancy, rapid weight loss or gain, and bodybuilding. It can appear as pinkish, purplish, or flesh colored linear bands or streaks on the skin that are depressed or indented.

Stasis dermatitis is a type of eczema that develops on the lower legs as a result of poor circulation. In affected people, the valves in the deep leg veins that help push blood back to the heart begin to fail, leading to the leakage of fluid, varicose veins, and subsequent swelling of the lower legs.

Seborrheic dermatitis is a very common skin condition which presents with itchy, red patches of skin, greasy scales, and flaking. Common areas of involvement include the scalp, ears, eyebrow region, and sides of the nose. It typically occurs in infants younger than 3 months of age and in adults ages

Scleroderma is a rare autoimmune condition that causes the hardening and tightening of the skin and connective tissue underneath it. The condition can also impact underlying blood vessels and organs. Affected individuals may exhibit Raynaud’s phenomenon - a condition where the fingers and toes may

Sarcoidosis is an inflammatory condition where the immune system goes into overdrive, creating clusters of inflamed tissue called granulomas to form in different parts of the body. Though it can affect many organ systems such as the skin, eyes, heart, and nervous system, involvement of the lungs and

Rosacea is a common skin condition which presents with redness of the face, small visible blood vessels on the nose and cheeks, and pimple-like breakouts. Rosacea can also affect the eyes (ocular rosacea) presenting with symptoms such as dryness, redness, burning, and itching of the eyes. Rosacea most

Pseudofolliculitis barbae is a chronic inflammatory condition that predominantly affects Black men. Affected individuals develop pink papules and pustules around the hair follicles on the face and neck due to shaving. As the papules and pustules resolve, it can result in hyperpigmentation (darker discoloration)

Prurigo nodularis is a condition where repeated scratching or picking at a site creates itchy, raised, hard bumps on the skin. Prurigo nodularis can appear anywhere on the body, but is most commonly found on the arms, legs, trunk, or buttocks. The condition is more common in older individuals (over 50),

Pityriasis rosea is a common, self-limited rash that typically begins with the appearance of a solitary, enlarging, circular, pink, scaly patch - known as the “herald patch”. In the following 1-2 weeks, numerous smaller, round to oval, pink, scaly patches appear, typically on the trunk in a Christmas-tree-like

Pityriasis alba is often thought of as a low grade form of eczema. It presents with ill-defined, light colored (hypopigmented), slightly scaly patches of skin most commonly found on the face. It affects mainly children and adolescents and is often more noticeable in darker skin tones or tanned skin.

Perioral dermatitis is a type of rash that typically presents as pink papules (small red bumps) and scaling around the mouth. In addition to affecting the area around the mouth, it can also appear around the nose or eyes and can be referred to as periorificial dermatitis. The exact cause of perioral

Pemphigus is a rare group of autoimmune skin diseases that causes painful blisters on the skin and/or mucous membranes (lips, mouth, esophagus, nose, eyes, genitals). The different types of pemphigus include: pemphigus vulgaris, pemphigus vegetans, pemphigus foliaceus, endemic pemphigus, pemphigus erythematosus,

Nummular dermatitis is a type of eczema characterized by intensely itchy, red, scaly, and at times weeping or oozing, coin-shaped lesions. Nummular dermatitis typically affects the extremities, with the legs being the most common site of involvement. The condition can occur at any age, with men being

Morphea, also known as localized scleroderma, is a rare condition that causes scar-like changes to the skin. Morphea commonly presents as oval lesions on the trunk (chest, abdomen, and/or back). It can also present as a linear stripe on the arms, legs, and even the forehead or scalp. In its initial inflammatory