title: [Pseudohypoparathyroidism or vitamin D deficiency? Report of one case].
abstract: Pseudohypoparathyroidism is characterized by a resistance to parathormone, with variable phenotypical and biochemical manifestations. Its diagnosis is difficult. We report a 28 year old male presenting with a hypokalemic periodic paralysis. His serum PTH was elevated to 1,343 and 1,101 pg/ml with concomitant hypocalcemia of 7.9 and 6.7 mg/dl. Twenty four hour urinary calcium and serum 25 hydroxy vitamin D were normal. Bone mineral density was normal. The patient was managed with calcitriol in doses of 1 to 2 microg/d, associated to calcium 2 g/day. Serum calcium levels and PTH normalized after two months and six months of treatment respectively.
authors.affiliation: Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile. jmlopez@med.puc.cl
authors.forename: José M
authors.initials: JM
authors.lastname: López
authors.forename: Carmen M A
authors.initials: CM
authors.lastname: Carrasco
mesh_terms: D000249:Adenosine Monophosphate / Q000652:urine; D000328:Adult; D002118:Calcium / Q000097:blood; D003937:Diagnosis, Differential; D006801:Humans; D006996:Hypocalcemia / Q000378:metabolism; D020514:Hypokalemic Periodic Paralysis / Q000378:metabolism; D008297:Male; D010281:Parathyroid Hormone / Q000097:blood; D011547:Pseudohypoparathyroidism / Q000145:classification / Q000175:diagnosis* / Q000378:metabolism; D014808:Vitamin D Deficiency / Q000175:diagnosis* / Q000378:metabolism
chemical_list: D010281:Parathyroid Hormone; D000249:Adenosine Monophosphate; D002118:Calcium