Dermatology Library
- A ·
- B ·
- C ·
- D ·
- E ·
- F ·
- G ·
- H ·
- I ·
- J ·
- K ·
- L ·
- M ·
- N ·
- O ·
- P ·
- Q ·
- R ·
- S ·
- T ·
- U ·
- V ·
- W ·
- X ·
- Y ·
- Z
W
Warts:
Warts are benign tumors that commonly involve the skin and other
epithelial tissues. The etiologic agents for these infections are a class of double-
stranded DNA viruses called papillomaviruses. Warts are generally classified by
their clinical features and morphology (e.g., common, flat, filiform) or by location
(e.g., genital, plantar, respiratory papillomatosis).
Whitehead:
An acne lesion that forms when oil and skin cells block the opening of a hair follicle. For this reason, whiteheads are called "closed comedones."
Wrinkles:
A wrinkle is a ridge or crease of a surface. It usually refers to folds on fabric or clothes, or on the skin of an organism; the folds are generally random and do not exhibit any repeating pattern.
Skin wrinkles typically appear as a result of aging processes such as glycation or, temporarily, as the result of prolonged (more than a few minutes) submersion in water.