Pertaining to the skin
Outermost portion of the skin consisting of 4-5 strata (layers) of epithelial cells.
Deepest layer of the epidermis. Produces new cells
Protein that thickens and toughens the skin
Outermost layer composed of flat, dead, protective cells that are constantly being shed and replaced.
Produced by some cells in the epidermis. Pigment that gives skin color and protects against sunlight
Layer beneath the epidermis. Contains connective tissue, nerves, blood vessels, lymphatics, and sensory receptors. Nourishes and supports the skin.
Beneath the dermis and is mainly composed of connective tissue and fat.
Sweat gland. Temperature regulation by releasing watery fluid that evaporates to cool the skin
Releases oily fluid called sebum that lubricates the hair and skin and prevents drying.
Small muscle attached to the follicle that raises the hair to produce goose bumps.
Nail cuticle. Extension of the epidermis onto the nail.
Keratin, horny layer of skin
Dark, black, melanin
Sebum, sebaceous gland
Raised, fluid filled lesion larger than a vesicle
Crack or break in the skin
Flat, colored spot
Solid, raised lesion larger than a papule; often indicative of a systemic disease
Small, circular, raised lesion at the surface of the skin
Superficial, flat, or slightly raised differentiated patch more than 1cm in diameter
Raised lesion containing pus, often in a hair follicle or sweat pore
Lesion resulting from destruction of the skin and perhaps subcutaneous tissue
Small, fluid filled, raised lesion. A blister of bleb
Smooth, rounded, slightly raised area often associate with itching, seen in urticaria (hives) such as that resulting from allergies
Disruption of the wound layers
Protrusion of internal organs through the lesion.
Bloody wound drainage
Pus containing wound drainage
Excess collagen formation during healing.
Removal of dead or damaged tissue from a wound.
Thick dark crust or scab
Full thickness skin graft
Split thickness skin graft
Involves the epidermis only. Red, dry and minimal pain. Sunburn. First degree burn
Superficial partial thickness burn
Epidermis and a portion of the dermis. Reddens and blisters and is painful. Severe sunburn or scalding
Deep partial thickness
Epidermis and dermis. May blister with weeping surface or dry because of sweat gland damage. Scalding, hot grease or flame. Second degree burn.
Full thickness burn
Full skin and sometimes subcutaneous tissue and underlying tissue. Broken, dry and pale or charred. Skin grafting or loss of digit or limb. Third degree burn.
Chronic overgrowth (hyperplasia) of the epidermis
Formation of bullae in the skin and mucous membranes. Caused by separation of the epidermal cells from the underlying layers. Autoimmune reaction to epithelial cells. Fatal unless treated by suppressing the immune system.
Lupus erythematosus (LE)
Chronic inflammatory autoimmune disease of the connective tissue.
Systemic lupus erytgematosus
More widespread form of LE that involves the skin and other organs. More prevalent in women.
Disease of unknown cause. Thickening and tightening of the skin
Squamous cell carcinoma
Cancer of the epithelial cells. Painless, firm, red nodules or plaque that may develop surface scales, ulceration, or crusting. Tends not to metastasize. Surgical removal or with X-radiation or chemotherapy.
Basal cell carcinoma
Cancer of the epithelial cells. More than 75% of skin cancers. Usually appears as pearly smooth papule. Easily seen and do not metastasize. Cure rate at 95% after excision.
Overgrowth of melanocytes. Most dangerous as it tends to metastasize. Lesions of variable color with irregular border. Good prognosis if recognized and removed before it enters the invasive stage.
Once considered rare. Seen frequently is association with AIDS. Brownish areas on the legs. Become raised and firm as the tumor progresses.
Absence or loss of hair
Plug of sebum. Often containing bacteria in a hair follicle. A blackhead.
Abnormality in keratin formation in epithelial cells
Collection of blood under the skin
Acute infectious skin disease with redness and swelling
Rare malignant disease that originates in the skin and involves the internal organs and lymph nodes. Large painful ulcerating tumors.
Skin reaction marked by temporary, smooth, raised areas associated with itching. Hives.
Epidermal tumor. A wart
Fatal hereditary disease that begins in childhood with skin discolorations and ulcers. Muscle atrophy. Increased sensitivity to sunlight. Increased susceptibility to cancer.
Resistance to skin deformation. Evidenced by the skin to return to position when pinched.