title: Vitamin D-resistant rickets type II-A, basal ganglia calcification, and catatonia: a casual or causal relationship?
abstract: BACKGROUND
  Vitamin D-resistant rickets type-IIA (VDRR-IIA) is a rare, congenital, metabolic disorder characterized by hypocalcemia, rickets, and alopecia. There are reports correlating calcium-metabolic disorders with basal ganglia calcification (BGC) and neuropsychiatric symptoms.
  
  
  OBJECTIVE
  The authors document and discuss the relationships of these phenomena.
  
  
  METHODS
  The authors describe a patient born with VDRR-IIA who subsequently developed BGC at age 15, and catatonic symptoms of progressive severity at age 16.
  
  
  RESULTS
  There appeared to be a positive correlation between the severity of BGC and neuropsychiatric symptoms.
  
  
  CONCLUSIONS
  This is the first time VDRR-IIA, BGC, and catatonia have been reported in a patient, and the authors discuss the relationship among the conditions.
authors.affiliation: correspondence and M.D., Institute of Psychiatry, University of São Paulo, Alameda Fernao Cardim 346/101 Postal Code: 01403-01020, São Paulo (SP), Brazil. brunowsky@gmail.com
authors.forename: André Russowsky
authors.initials: AR
authors.lastname: Brunoni
authors.forename: Ana C G
authors.initials: AC
authors.lastname: Nakata
authors.forename: Teng Chei
authors.initials: TC
authors.lastname: Tung
authors.forename: Geraldo F
authors.initials: GF
authors.lastname: Busatto
mesh_terms: D001479:Basal Ganglia / Q000473:pathology*; D002114:Calcinosis / Q000209:etiology / Q000473:pathology; D002389:Catatonia / Q000209:etiology* / Q000473:pathology; D053098:Familial Hypophosphatemic Rickets / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D055815:Young Adult