title: Hair-shaft abnormality in a 7-year-old girl. Trichorrhexis nodosa dueto biotinidase deficiency.
authors.affiliation: Charité-Universitätsmedizin Berlin, Berlin, Germany.
authors.forename: Lena
authors.initials: L
authors.lastname: Lünnemann
authors.forename: Annika
authors.initials: A
authors.lastname: Vogt
authors.forename: Ulrike
authors.initials: U
authors.lastname: Blume-Peytavi
authors.forename: Natalie
authors.initials: N
authors.lastname: Garcia Bartels
mesh_terms: D001710:Biotin / Q000008:administration & dosage; D028921:Biotinidase Deficiency / Q000150:complications* / Q000188:drug therapy; D002648:Child; D005260:Female; D006197:Hair / Q000002:abnormalities*; D006201:Hair Diseases / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D006801:Humans; D008853:Microscopy; D054463:Trichothiodystrophy Syndromes / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology
chemical_list: D001710:Biotin