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

Seborrheic keratoses are very common skin growths that tend to develop with age. They are benign and not worrisome. These growths are commonly found on the head, neck, chest, or back, though they can appear anywhere on the body with the exception of the palms and soles. Seborrheic keratoses can be white,

Shingles is a rash caused by the reactivation of the chickenpox virus (also known as the varicella zoster virus or VZV). Classically, the rash affects only one side of the body, within a single stripe or band known as a dermatome. There may be a prodrome consisting of pain, itching, or tingling localized

Dry skin is a common skin condition that results when the skin loses moisture and its natural oils resulting in scaling, flaking, cracking, and itching. It is sometimes also referred to as xeroderma or xerosis. Dry skin affects people of any age and skin type and can occur anywhere on the body. Dry skin

Skin tags are very common, benign, skin growths. They present as fleshy outgrowths of the skin, at times extending from a stalk or stem. They are frequently found in areas of high friction such as around the neck, in the axilla (armpits), or in the groin folds. They are usually flesh colored, but can

Squamous cell carcinoma is the second most commonly occurring type of skin cancer. It appears most frequently in areas that are exposed to direct sunlight, such as the face, nose, ears, lips, neck, and back of the hands. Squamous cell carcinomas can present as rough, scaly, red patches; wart or horn-like