Idiopathic hypoparathyroidism associated with adult rheumatoid arthritis

A 48-year-old female patient with adult onset idiopathic hypoparathyroidism diagnosed at the age of 28 years developed a typical seropositive rheumato id arthritis (RA) at 46 years of age after several years of evolution of a palindromic rheumatism. Only one case of an association between idiopathic hypoparathyroidism and RA has been described in the medical literature. Aut oimmunity seems to play a pivotal role in the aetiopathogenesis of both dis eases, and could explain the nature of this association; nevertheless, a ch ance association could not be excluded.