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,

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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

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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

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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

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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,

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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.

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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

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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

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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

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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

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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

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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

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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,

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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

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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

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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

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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

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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

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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,

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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

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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.

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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

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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),

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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)

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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

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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

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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.

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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.

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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

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