Medical Terminology Chapter 4 122

pustule

Elevation of skin containing pus

Ulcer

Erison of the skin mucous membrane

Pressure ulcer

Ersion of the skin caused by prolonged pressure, often occuring in bedridden patients.

pruritus

itching

Pallor

paleness

Vesicle

small collection of clear fluid; blister

Purpura

small hemorrhages in the skin, giving a purple- red discoloration; associated with blood disorders or vascular abnormalities.

Papule

small, solid skin elevation

verruca

wart caused by a virus

Virus

Minute microorgansim, much smaller than a bacterium, characterized by a lack of independent metabolism and the ability to replicate only within living hospt cells.

nevus

Mole; circumscribed malformation of the skin, usually brown, black, or flesh colored.

petechia

Pinpoint skin hemorrhage

Wheal

Slight elevation of the skin; hives

Nodule

Small, knotlike mass that can be felt by touch