| A | B |
|---|
| Epidermis | Outermost layer of skin |
| Dermis | Known as the corium or "true skin" |
| Subcutaneous layer | Connects skin to underlying tissues |
| Sudoriferous glands | Sweat glands |
| Sebaceous glands | Produce sebum |
| Follicle | Hollow tube that hair grows in |
| Hair shaft | Covers all body surfaces |
| Alopecia | Permanent loss of hair on the scalp |
| Nails | Made of dead keratinized epithelial cells |
| Melanin | Brownish-black pigment produced in the epidermis |
| Melanocyte | Cell that contains melanin |
| Albino | Absence of color pigment in the skin |
| Erythema | Reddish color that can be caused by burns or congestion of blood in the vessels |
| Jaundice | Yellowish discoloration of the skin |
| Cyanosis | Bluish discoloration caused by insufficient oxygen |
| Chronic Poisoning | May cause gray or brown skin discoloration |
| Macules | Flat spots on the skin, such as freckles |
| Papules | Firm, raised areas such as pimples |
| Vesicles | Blisters, or fluid-filled sacs |
| Pustules | Pus-filled sacs such as those seen in acne |
| Bulla | Fluid filled lesion greater than 2cm in diameter; |
| Comedo | Plugged pilosebaceous duct, formed from sebum and keratin |
| Cyst | Semi-solid or fluid-filled encapsulated mass extending deep into the dermis |
| Nodule | Firm, raised lesion; extending into dermal layer; deeper than a papule, 0.5 – 2cm in diameter |
| Patch | Flat, pigmented, circumscribed area greater than 1cm in diameter |
| Plaque | Circumscribed, solid, elevated lesion greater than 1cm in diameter |
| Wheals | Itchy, elevated areas with an irregular shape |
| Tumor | Elevated, solid lesion larger than 2cm in diameter, extending into dermal and subcutaneous layers |
| Crust | Areas of dried pus and blood, commonly called scabs |
| Ulcer | A deep loss of skin surface that may extend into the dermis |
| Atrophy | Thinning of skin surface at site of disorder; aging skin |
| Erosion | Circumscribed lesion involving loss of superficial epidermis; rug burn, abrasion |
| Excoriation | Linear scratched or abraded areas, often self-induced |
| Fissure | Linear cracking of the skin, extending into the dermal layer |
| Keloid | Thick, red, or dark firm scar formed by hyperplasia of fibrous tissue |
| Linchenification | Thickened, prominent skin markings caused by constant rubbing; |
| Scale | Thin, dry flakes of shedding skin |
| Scar | Fibrous tissue caused by trauma, deep inflammation, or surgical incision |
| Skin Cancer | Most common type of cancer |
| Squamous cell carcinoma | Affects the thin cells of the epithelium |
| Melanoma | Develops in the melanocytes |
| Basal cell carcinoma | Cancer of the basal cells in the epidermis |
| Acne | Inflammation of the sebaceous glands |
| Athlete's foot | Contagious fungal infection that usually affects the feet |
| Eczma | Noncontagious, inflammatory skin disorder caused by allergens or irritants |
| Psoriasis | chronic, noncontagious skin disease with periods of exacerbations and remissions |
| Ringworm | highly contagious fungal infection of the skin or scalp |
| Impetigo | Highly contagious condition resulting from staphylococcus or streptococcal infection |
| Tinea | general name for many different types of mycoses |
| Mycoses | Fungal infections |
| Warts | caused by papilloma virus; type of benign neoplasm of the skin |
| Boils | also called furuncles are most often local staphylococci infections of hair follicles characterized by large, inflamed pustules |
| Carbuncle | A group of untreated boils that fuse into even larger pus filled lesions |
| Scabies | Contagious skin condition caused by the itch mite |
| Uticaria | (Hives); characterized by raised, red lesions called wheals |
| Scleroderma | An autoimmune disease that affects the blood vessels and connective tissue of the skin |
| Decubitus ulcer | (pressure sore); |
