alopecia totalis

alopecia /al·o·pe·cia/ (al″o-pe´shah) baldness; absence of hair from skin areas where it is normally present.alope´cic

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androgenetic alopecia  a progressive, diffuse, symmetric loss of scalp hair, believed due to a combination of genetic predisposition and increased response of hair follicles to androgens, in men beginning around age 30 with hair loss from the vertex and frontoparietal regions (male pattern a. or male pattern baldness), and in females beginning later with less severe hair loss in the frontocentral area of the scalp.

alopecia area´ta  hair loss, usually reversible, in sharply defined areas, usually involving the beard or scalp.

cicatricial alopecia  irreversible loss of hair associated with scarring, usually on the scalp.

male pattern alopecia  see androgenetic a.

alopecia tota´lis  loss of hair from the entire scalp.

traction alopecia  traumatic alopecia due to continuous or prolonged traction on the hair, as applied in certain styles of hair dressing or in the habit of twisting the hair.

alopecia universa´lis  loss of hair from the entire body.

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alopecia to·ta·lis (t-tls)

n.

Complete loss of scalp hair occurring either all at one time or within a short period of time.

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alopecia totalis,

an uncommon condition characterized by the loss of all hair on the scalp. The cause is unknown, and the baldness is usually permanent. No treatment is known. Compare alopecia areata, alopecia universalis.