Biomaterial Database

[Structural abnormalities of the hair shaft]. 1996

E Selvåg

Hudavdelingen, Ullevål sykehus, Oslo.

The diagnosis of structural abnormalities of the hair shaft is of clinical relevance, since such abnormalities may indicate underlying metabolic disorders, or may be associated with other diseases. Many of the abnormalities present themselves as alopecia and are due to greater fragility of the hair shaft. An outline of some of the most common hair shaft abnormalities is given, as shown by patients with trichorrhexis nodosa, pili torti, "uncombable hair" and pili torti et canaliculi.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D005260	Female		Females
D006197	Hair	A filament-like structure consisting of a shaft which projects to the surface of the SKIN from a root which is softer than the shaft and lodges in the cavity of a HAIR FOLLICLE. It is found on most surfaces of the body.	Fetal Hair,Hair, Fetal,Lanugo,Fetal Hairs,Hairs,Hairs, Fetal
D006201	Hair Diseases	Diseases affecting the orderly growth and persistence of hair.	Hair Disease
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000506	Alopecia Areata	Loss of scalp and body hair involving microscopically inflammatory patchy areas.	Alopecia Circumscripta