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How common is CAH overall?

CAH is considered a rare condition, affecting about 1 in every 15,000 to 20,000 people worldwide. However, the frequency varies quite a bit depending on which type you're looking at.

Classic CAH is less common but more serious. It's the form that gets caught through newborn screening in all U.S Show Full Answer

How common is CAH overall?

CAH is considered a rare condition, affecting about 1 in every 15,000 to 20,000 people worldwide. However, the frequency varies quite a bit depending on which type you're looking at.

Classic CAH is less common but more serious. It's the form that gets caught through newborn screening in all U.S. states.

Nonclassic CAH is much more common but often goes undiagnosed because symptoms can be mild or absent. Genetic studies suggest it may affect about 1 in 100 people in the U.S.

Certain ancestral backgrounds have higher rates of nonclassic CAH, including:
* Ashkenazi Jews
* Hispanics
* Slavic groups

The most common type overall is nonclassic CAH due to 21-hydroxylase deficiency. In fact, CAH caused by 21-hydroxylase deficiency makes up 95 percent of all CAH cases.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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