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

A cold sore is a blister or a cluster of blisters that typically form on or around the lips and mouth. Affected people can experience recurrent bouts of blister outbreaks, often triggered by sun exposure, hormonal fluctuations, stress, illness, or injury. The condition is caused by an infection by the

Pemphigus is a rare group of autoimmune skin diseases that causes painful blisters to form 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

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 which predominantly affects Black men. Affected individuals develop pink papules and pustules around the hair follicles on the face and neck as a result of shaving. As the papules and pustules resolve, it can result in hyperpigmentation (darker

Psoriasis is a common, immune-mediated disease which causes inflammation in the body. It presents as red, scaly, plaques on the skin and can also cause pain and swelling in the joints (known as psoriatic arthritis). The most common sites of skin involvement include the scalp, elbows, and knees. Other

Pyogenic granulomas are benign vascular growths that grow rapidly and frequently present as raised, red lesions that bleed with minor trauma. These lesions are most commonly found on the face or fingers, but can also develop on other parts of the skin or oral mucosa (lips or gums). Children, teenagers,

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

Scabies is an intensely itchy rash caused by an infestation with a burrowing mite called Sarcoptes scabiei. Infected individuals develop pink papules, excoriations, nodules, and burrows (thread like tracks in the skin). These findings mainly affect the hands, wrists, axillae (armpits), feet, waistline,

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

Sebaceous hyperplasia are benign, non-worrisome, enlarged oil gland growths. They present as pinkish orange or yellow papules, sometimes with a central dell, most commonly found on the central face of middle aged or older people. Sebaceous hyperplasia can also be found on the chest, areola, mouth, or

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