Pseudohypoparathyroidism

Last revised by Khalid Alhusseiny on 21 Feb 2023

Pseudohypoparathyroidism occurs when there is end-organ resistance to parathyroid hormone (PTH).

Pseudohypoparathyroidism has an estimated prevalence of 1.1 per 100,000 people 6.

  • hypocalcemia and tetany

  • short stature

  • developmental delay

There are several recognized subtypes which include:

  • type I: abnormal cyclic adenosine monophosphate (cAMP) response to PTH stimulation

  • type II: normal cAMP response to PTH stimulation

  • PTH level: high

  • serum phosphate level: high

  • serum calcium level: low  

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Cases and figures

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