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 distribution.

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), Blacks, and those with certain long-term diseases (eczema, diabetes, kidney disease, Hepatitis C, HIV).

Pruritus, also known as itching, is a common skin symptom that results in an uncomfortable sensation that elicits an urge to scratch. Pruritus can be caused by a variety of factors, including skin diseases (such as atopic dermatitis, eczema, and psoriasis), internal medical conditions (such as liver disease, kidney disease, and disease of blood cells), infections (such as scabies and fungus), and certain medications.

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 discoloration) and scarring.

Psoriasis is a chronic skin condition that causes patches of thick, pink-to-red skin with silvery scales. It is caused by an overactive immune system that causes skin cells to grow too quickly. The exact cause of psoriasis is not known, but it is thought to be related to a combination of genetic and environmental factors.

Rosacea is a chronic skin condition that causes redness and small visible blood vessels on the face, as well as pimple-like bumps. The exact cause of rosacea is not known, but it is believed to be related to a combination of genetic and environmental factors. Triggers for rosacea can include sun exposure, stress, alcohol consumption, and hot or spicy foods. Rosacea is more common in those over the age of 30.

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 lymph nodes is most common.

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 become numb and cool and turn white or blue in color as a response to cold temperatures or other stressors.

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 30-60.

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.

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.

Urticaria, also known as hives, is a skin condition characterized by red, itchy welts that can appear anywhere on the body. The welts are often raised and can be either round or irregular in shape. They can range in size from small spots to large, connected areas and can be accompanied by swelling, especially around the eyes, lips, and hands.

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,