Pseudohypoparathyroidism is a rare disease characterized by a target t
issue resistance to the action of the parathyroid hormone (PTH). Frequ
ently, others hormonal disorders can be associated. We report a family
with pseudohypoparathyroidism type I, and discuss the clinical-hormon
al alterations founded; it is emphasized that while there were no phen
otypical differences among the family members; from the hormonal featu
res point of view, some differences do exist, and several degrees of p
eripheral resistance were noted.