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 that 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 form

OVERVIEW: Have you recently experienced dry patches of skin that are red, inflamed, and extremely itchy? You may have atopic dermatitis or eczema and require a consultation from a licensed medical professional or dermatologist. Here's everything you need to know about the causes, symptoms, and treatment

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

Dyshidrotic eczema is a form of eczema that manifests as intensely itchy blisters that develop on the sides of the fingers, toes, palms, or soles. It can be caused by atopic dermatitis, contact dermatitis, or an id reaction (reaction to a skin infection or skin rash at another site). The condition is

Eczema refers to a group of conditions characterized by dry, inflamed, and itchy skin. The most common kind of eczema is atopic dermatitis. Other forms of eczema include contact dermatitis, irritant dermatitis, nummular dermatitis, and dyshidrotic eczema. The term eczema is often used by people to refer

Folliculitis is the medical term for inflammation of a hair follicle. It typically presents as pink bumps or pustules (pus filled bumps) centered around a hair follicle. The condition can appear anywhere on the body where there are hairs, including on the face, chest, back, buttocks, and/or legs. The

Granuloma annulare is a harmless type of skin rash that often presents with ring-shaped lesions. Although the condition can appear anywhere on the skin, favored sites are the hands, feet, elbows, and ankles. It is typically found in children, teenagers, and young adults. Granuloma annulare is more prevalent

Hidradenitis suppurativa is a chronic inflammatory condition which presents with deep, painful nodules or lumps under the skin. The painful nodules can rupture, leading to drainage of pus and blood. Over time, the painful nodules can connect, forming tunnels under the skin. The condition often results

If you experience sweating that seems more excessive than normal on your hands, feet, or armpits, you may have hyperhidrosis. A board-certified dermatologist can help—read on to find out all about excessive sweating, what causes it, and treatment options to control your symptoms. What is Hyperhidrosis? Also

Intertrigo is a common rash found in the folds of the skin. Common areas of involvement include the groin, in the folds of the abdomen, and under the breasts. Because of the friction, warmth, and moisture in the skin folds, the affected areas become red and raw. Symptoms can also include itching and

Keratosis pilaris is a common skin condition characterized by rough, bumpy skin most often found on the back of the arms, thighs, and cheeks. It is a common finding in those with dry and sensitive skin. It typically affects children and teenagers and can improve or resolve over time. The condition is

Lichen planus is an inflammatory condition that can affect the skin, hair, nails, and mucous membranes (such as the mouth and genital region). On the skin, it presents as small, pink to purple, itchy, flat-topped papules. Though the rash can appear anywhere (including on the genital skin), favored sites

Lichen sclerosus is a chronic skin condition most commonly affects the genital skin. The affected areas become thin, white, crinkled, irritated, and/or intensely itchy. Blisters and sores can also form. Left untreated, the condition can lead to scarring and increase an individual’s risk for skin cancer,

Lichen simplex chronicus is a condition where repeated scratching or rubbing of a site creates a localized, itchy, thickened, leathery patch of skin. Lichen simplex chronicus can present as a solitary lesion or as multiple lesions—usually in areas that are easy to reach. The most commonly involved

Lupus is a group of autoimmune diseases where the body’s own immune system attacks healthy tissue leading to inflammation and damage in the affected organs. Lupus can affect the skin, joints, kidneys, brain, heart, lungs, and blood cells. Types of lupus include: Systemic Lupus Erythematosus (SLE)This

Melasma is a common skin condition where affected individuals develop splotchy, irregularly shaped, brown patches on the face. Common areas of involvement include the forehead, cheeks, nose, jawline, chin, and upper lip. It typically affects women between the ages of 20 and 40, and is more common in

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

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

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,

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

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.

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

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),

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)

OVERVIEW Psoriasis is a chronic autoimmune disorder that causes your skin cells to multiply too quickly. As a result, your skin becomes itchy, flaky, and inflamed as this sped-up growth cycle interferes with the typical skin turnover process. Psoriasis is not a contagious condition. It also cannot be

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

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

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

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

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.