is a genetic disorder that resembles hypoparathyroidism (lowered levels of parathyroid hormone), but is caused by a lack of response to parathyroid hormone rather than having too little of the hormone itself. This condition is very similar to hypoparathyroidism, with low calcium levels and high phosphate levels in the blood. This results in the characteristic symptoms which are generally first seen in childhood. There are two different types of pseudohypoparathyroidism, both of which are caused by abnormal genes. Type 1 can be further divided into three sub-types. Click on the links below for more information on the various types of pseudohypoparathyroidism.
Pseudohypoparathyroidism type 1A
Pseudohypoparathyroidism type 1B
Pseudohypoparathyroidism type 1C
Pseudohypoparathyroidism type 2 Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.