title: Juvenile cobalamin deficiency in a 17-year-old child with autonomic dysfunction and skin changes.
abstract: We report a rare case of juvenile cobalamin deficiency who presented at the age of 17 years. He was underweight and had skin changes, normocytic anemia, and autonomic dysfunction, which led to adynamic ileus and acute postrenal failure. The expected macrocytosis was masked by an underlying alpha-thalassemia trait. The patient had an excellent response to parenteral cobalamin treatment.
authors.affiliation: Department of Pediatrics, University of South Alabama College of Medicine, Mobile, AL, USA.
authors.forename: Abdul Hafeez
authors.initials: AH
authors.lastname: Siddiqui
authors.forename: Aamir
authors.initials: A
authors.lastname: Ansari
authors.forename: Cameron M
authors.initials: CM
authors.lastname: Beech
authors.forename: Nidhi P
authors.initials: NP
authors.lastname: Shah
authors.forename: Stephan M
authors.initials: SM
authors.lastname: Tanner
authors.forename: Sharada A
authors.initials: SA
authors.lastname: Sarnaik
mesh_terms: D000293:Adolescent; D001342:Autonomic Nervous System Diseases / Q000209:etiology*; D003456:Cryptorchidism / Q000150:complications; D005076:Exanthema / Q000209:etiology*; D020139:Gastroschisis / Q000150:complications; D006801:Humans; D006869:Hydronephrosis / Q000150:complications / Q000151:congenital; D008297:Male; D021782:Multicystic Dysplastic Kidney / Q000150:complications; D014517:Ureteral Obstruction / Q000150:complications / Q000151:congenital; D014805:Vitamin B 12 / Q000097:blood*; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000503:physiopathology
chemical_list: D014805:Vitamin B 12
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