Hereditary hypotrichosis (Marie Unna type).
D000293:Adolescent; D000328:Adult; D000368:Aged; D000505:Alopecia / Q000235:genetics* / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006197:Hair / Q000473:pathology; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D012535:Scalp / Q000473:pathology