| Term | Definition |
| acne vulgaris | acne |
| alopecia | baldness |
| comedo | blackhead |
| dermatrophy | stretch marks |
| diaphoresis | excessive sweating |
| erythema | redness of the skin (flushing) |
| herpes simplex virus (HSV) | fever blister |
| onychomalacia | nail softening |
| onychophagia | nail biting |
| paronychia | infection around the nail |
| pediculosis | lice infestation |
| plaque | dandruff |
| pruritus | itching |
| rhytid/o | wrinkles |
| urticara | allergic reaction, hives |
| xeroderma | dry skin |
| abscess, furuncle, carbuncle | localized collection of pus occuring in any body tissue including the skin; furnuncle occurs around a hair follicle; carbuncles are larger and involve several furuncles |
| candidiasis | yeast-type fungal infection caused by the yeast candida, often affecting individuals with chronic diseases |
| cellulitis | diffuse spreading inflammation of the skin usually caused by Staphylococcus |
| cheilitis | lip inflammation |
| exanthem | measles-like eruption or rash that may be due to a virus, bacterial toxin, or allergic reaction to a drug |
| herpes | family of viruses characterized by skin inflammation and the eruption of groups of small vesicles along the course of affected cutaneous nerve |
| herpes simplex 1 | commonly called fever blisters and cold sores, usually around lips and nose |
| herpes genitalis (simplex type 2) | commonly called genital herpes, highly contagious disease that may be sexually transmitted |
| herpes varicella | highly contagious childhood disease, commonly called chickenpox, becomes dormant after the infection clears |
| herpes zoster | reactivation of the varicella virus in adults, appears as blisters grouped along cutaneous nerves, commonly called shingles |
| impetigo | bacterial, inflammatory skin disease caused by Staphylococci and Streptococci characterized by vesicles, pustules, and crusted lesions |
| lyme disease | multisysem infection caused by the lyme spirochetes or Brorrelia burgdorferi, a bacterium |
| measles | highly communicable disease caused by the rubeola virus, marked by fever and rash, also known as rubeola |
| pityriasis rosea | benign rash characterized by scaling, rose-colored spots |
| scabies | contagious, parasitic infection of the skin causing intense itching |
| tinea | skin disease caused by fungus, ringworm, the usually includes the name of the body part affected |
| tinea versicolor | type of superficial fungal infection on the trunk and arms caused by the overgrowth of a saprophytic yeast normally present (pityrosporum) |
| verruca | wart, type of common viral skin infection |
| contact dermatitis | acute or chronice allergic reaction affecting the skin |
| eczema | inflammation of the skin characterized by itching, redness, and vesicles, causes skin thickening in acute stages or dry lichenifications in chronic stages |
| atopic dermatitis | chronic type of eczema often in families with a history of allergies and asthma, onset is usually two months after birth |
| lichen planus | recurrent, itchy, inflammatory skin eruption often accompanied by oral lesions |
| psoriasis | chronic skin disease of unknown cause characterized by red, raised plaques with distinct borders and silvery scales |
| rosacea | common chronic red pustules that usually erupt in the middle of the face in middle-aged individuals |
| scleroderma | chronic disease caused by infiltration of fibrous tissue resulting in "hard skin" |
| sebaceous cyst | cyst that develops when a sebaceous or oil gland becomes blocked |
| seborrheic dermatitis | superficial inflammation of the skin associated with heavy production of sebum or oil that is overgrown with oil-bearing yeasts |
| systemic lupus erythematosus (SLE) | chronic inflammatory disease of connective tissue |
| actinic keratosis | premalignant condition characterized by growth of wart-like lesions on sun-exposed areas of skin |
| albinism | genetic total or partial absence of pigment in skin, eyes, and hair |
