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Familial association of pseudohypoparathyroidism and psoriasis: case report.

AbstractCONTEXT:
The association between psoriasis and hypoparathyroidism has been reported by several authors, and it has been suggested that abnormalities in calcium homeostasis may be involved in the development or exacerbation of psoriasis. However, so far there have only been two reports of pseudohypoparathyroidism associated with psoriasis.
OBJECTIVE:
To describe the familial occurrence of this association for the first time.
CASE REPORTS:
Two siblings with psoriasis associated with pseudohypoparathyroidism were presented. The first patient was a 24-year-old white male with disseminated erythrodermic pustular psoriasis that began 2 months before admission. He had had a history of mental retardation, recurrent otitis, seizures and arthralgia from the age of 11 years onwards. He presented the characteristic phenotype of Albright osteodystrophy: short stature, obesity, round facies, broad forehead, short neck and brachydactylia. He adopted a position of flexed limbs and showed proximal muscle weakness and a positive Trousseau sign. He had clinical signs of hypocalcemia (0.69 mmol/l ionized calcium and 3.2 mg/dl total calcium), hyperphosphatemia (6.6 mg/dl), hypomagnesemia (1.0 mEq/l), hypoalbuminemia (3.1 g/dl), normal serum intact PTH levels (45.1 pg/ml), primary hypothyroidism (13.2 mU/ml TSH, and 4.7 mg/dl total T(4)), hypergonadotrophic hypogonadism (116.0 ng/ml LH, 13.2 mU/ml FSH and 325.0 ng/dl testosterone), osteoporosis, and diffuse calcifications in soft tissues and in the central nervous system. The second case was a 14-year-old white girl with a history of psoriasis vulgaris from the age of five years onwards, and antecedents of mental retardation. She presented signs of Albright osteodystrophy (short stature, round facies, obesity, short neck, brachydactylia), hypocalcemia (ionized calcium of 1.08 mmol/l and total calcium of 6.7 mg/dl) hyperphosphatemia (9.4 mg/dl), elevated serum PTH levels (223.0 pg/ml), osteoporosis, and hypergonadotrophic hypogonadism (7.0 mU/ml LH, 9.3 mU/ml FSH and undetectable estradiol levels).
AuthorsRenan Magalhães Montenegro Jr, Francisco José Albuquerque de Paula, Norma Tiraboshi Foss, Milton Cesar Foss
JournalSao Paulo medical journal = Revista paulista de medicina (Sao Paulo Med J) Vol. 120 Issue 1 Pg. 23-7 (Jan 03 2002) ISSN: 1516-3180 [Print] Brazil
PMID11836550 (Publication Type: Case Reports, Journal Article)
Chemical References
  • Cholecalciferol
  • Calcium Carbonate
Topics
  • Abnormalities, Multiple
  • Adolescent
  • Adult
  • Calcium Carbonate (therapeutic use)
  • Cholecalciferol (therapeutic use)
  • Female
  • Humans
  • Male
  • Nuclear Family
  • Pseudohypoparathyroidism (complications, genetics)
  • Psoriasis (drug therapy, etiology, genetics)

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