Pseudohypoparathyroidism

Last revised by Dr Mostafa El-Feky on 10 Sep 2020

Pseudohypoparathyroidism (PHP) is a condition where 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 cAMP response to PTH stimulation
  • type II: normal cAMP response to PTH stimulation
  • parathyroid hormone level: high
  • serum phosphate level: high
  • serum calcium level: low  

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Cases and figures

  • Case 1
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  • Case 2
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  • Case 3
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