A precancerous skin lesion that occurs on sun-damaged skin.
A genetic condition characterized by a deficiency or absence of pigment in the skin, hair, and irises due to a missing enzyme necessary for the production of melanin.
The partial or complete loss of hair, most commonly on the scalp; also known as baldness.
Surgical reduction of the upper and lower eyelids by removing sagging skin; also known as a lid lift.
A large blister that is usually more than 0.5 cm in diameter; plural, bullae.
A soft, raised, pink or red vascular birthmark.
A cluster of connected furuncles (boils).
An acute, rapidly spreading infection within the connective tissues.
A pigmentation disorder characterized by brownish spots on the face; also known as melasma or the mask of pregnancy.
A normal scar resulting from the healing of a wound; plural, cicatrices.
A noninfected lesion formed by the buildup of sebum and keratin in a hair follicle; also known as a blackhead; plural, comedones.
The removal of dirt, foreign objects, damaged tissue, and cellular debris from a wound to prevent infection and promote healing.
Inflammation of the skin.
Profuse, but not necessarily excessive, sweating.
Atypical moles that may develop into skin cancer.
A large, irregular area of purplish discoloration due to bleeding under the skin; plural, ecchymoses.
A form of persistent or recurring dermatitis characterized by redness, itching, and dryness with possible blistering, cracking, oozing, or bleeding.
Redness of the skin due to capillary dilation.
Abnormal redness of the entire skin surface.
Refers to a widespread rash, usually in children.
A condition in which there is widespread scaling of the skin, often with pruritus, erythroderma, and hair loss.
Inflammation of the hair follicles that is especially common on the limbs and in the beard area on men.
Large, tender, swollen areas caused by a staphylococcal infection around hair follicles or sebaceous glands; also known as boils.
A small knotlike swelling of granulation tissue in the epidermis.
A swelling of clotted blood trapped in the tissues.
Excessive bodily and facial hair in women, usually occurring in a male pattern.
A group of hereditary disorders characterized by dry, thickened, scaly skin.
A highly contagious bacterial skin infection characterized by isolated pustules that become crusted and rupture.
An abnormally raised or thickened scar that expands beyond the boundaries of the original incision.
Any skin growth, such as a wart or callus, in which there is overgrowth and thickening of the skin; plural, keratoses.
A malformation of the nails in which the outer surface is concave or scooped out like the bowl of a spoon; also known as spoon nail.
A chronic abnormal condition, usually in women, that is characterized by the accumulation of fat and fluid in the tissues just under the skin of the hips and legs.
A benign, slow-growing fatty tumor located between the skin and the muscle layer.
A discolored, flat spot, such as a freckle, that is less than 1 cm in diameter.
A type of skin cancer that occurs in the melanocytes.
A severe infection caused by Group A strepbacteria that enters the body through a wound. If untreated, the infected body tissue can be destroyed and the illness may be fatal; also known as flesh-eating bacteria.
Ingrown toenail in which the edges of a toenail curve inward and cut into the skin.
A fungal infection of the nail.
A benign, superficial, wartlike growth on the epithelial tissue or elsewhere in the body, such as in the bladder.
A small, raised, red lesion, such as an insect bite, that is less than 0.5 cm in diameter.
An acute or chronic infection of the skin fold around a nail.
An infestation with lice.
Small pinpoint hemorrhages less than 2 mm in diameter; singular, petechia.
Itching associated with most forms of dermatitis.
A common skin disorder characterized by flare-ups in which red papules covered with silvery scales occur on the elbows, knees, scalp, back, or buttocks.
The appearance of multiple purple discolorations on the skin caused by bleeding underneath the skin.
Producing or containing pus.
The surgical removal of excess skin and fat from the face for the elimination of wrinkles; also known as a facelift.
A chronic condition of unknown cause, characterized by tiny red pimples and broken blood vessels.
A skin infection caused by an infestation of itch mites that cause small, itchy bumps and blisters by burrowing into the top layer of human skin to lay their eggs.
An autoimmune disorder in which the connective tissues become thickened and hardened.
Overactivity of the sebaceous glands that results in the production of an excessive amount of sebum.
squamous cell carcinoma
A malignant tumor of the scaly squamous cells of the epithelium; however, it can quickly spread to other body systems.
systemic lupus erythematosus
An autoimmune disorder characterized by a red, scaly rash on the face and upper trunk. This condition also attacks the connective tissue in other body systems, especially in the joints.
A fungal infection of the skin, hair, or nails; also known as ringworm.
Itchy wheals caused by an allergic reaction; also known as hives.
Small, hard skin lesions caused by the human papillomavirus; also known as warts; singular, verruca.
A skin condition resulting from the destruction of the melanocytes due to unknown causes and causing irregular patches of white skin.
A small bump that itches and can appear as a symptom of an allergic reaction; a welt.
Excessively dry skin; also known as xerosis.
a small, circumscribed lesion containing pus; a pimple