Disease at a Glance

Summary
Congenital adrenal hyperplasia (CAH) due to 11-beta-hydroxylase deficiency is one of a group of disorders (collectively called congenital adrenal hyperplasia) that affect the adrenal glands. In this condition, the adrenal glands produce excess androgens (male sex hormones). This condition is caused by genetic changes in the CYP11B1 gene and is inherited in an autosomal recessive pattern. There are two types, the classic form and the non-classic form. Females with the classic form have ambiguous external genitalia with normal internal reproductive organs. Males and females with the classic form have early development of their secondary sexual characteristics (precocious puberty). The early growth spurt can prevent growth later in adolescence and lead to short stature in adulthood. About two-thirds of individuals with the classic form have high blood pressure which develops in the first year of life. Females with the non-classic form of 11-beta-hydroxylase deficiency have normal female genitalia. As affected females get older, they may develop excessive body hair growth and irregular menstruation. Males with the non-classic form do not typically have any signs or symptoms except for short stature. High blood pressure is not a feature of the non-classic form.
Estimated Number of People with this Disease
In the U.S., this disease is estimated to be fewer than

5,000

What Information Does GARD Have For This Disease?

Many rare diseases have limited information. Currently GARD is able to provide the following information for this disease:

*Data may be currently unavailable to GARD at this time.
When do symptoms of this disease begin?
The most common ages for symptoms of a disease to begin is called age of onset. Age of onset can vary for different diseases and may be used by a doctor to determine the diagnosis. For some diseases, symptoms may begin in a single age range or several age ranges. For other diseases, symptoms may begin any time during a person's life.
Prenatal
Before Birth
Newborn Selected
Birth-4 weeks
Infant Selected
1-23 months
Child
2-11 years
Adolescent
12-18 years
Adult
19-65 years
Older Adult
65+ years
The common ages for symptoms to begin in this disease are shown above by the colored icon(s).

Symptoms

These symptoms may be different from person to person. Some people may have more symptoms than others and symptoms can range from mild to severe. This list does not include every symptom.
This disease might cause these symptoms:
Musculoskeletal System

29 Symptoms

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Musculoskeletal System

Musculoskeletal System

The musculoskeletal system is made up of the bones, muscles, and joints. Common symptoms of problems in the musculoskeletal system include pain, weakness, stiffness, noises in the joints, inflammation, and decreased range of motion. Diseases affecting the musculoskeletal system may be diagnosed and treated by an orthopedist, rheumatologist, or neuromuscular specialist.

Causes

Genetic Disease

11-beta-hydroxylase deficiency is a genetic disease, which means that it is caused by one or more genes not working correctly.

Disease causing variants in the following gene(s) are known to cause this disease: CYP11B1

Questions:

Inheritance

All individuals inherit two copies of most genes. The number of copies of a gene that need to have a disease-causing variant affects the way a disease is inherited. This disease is inherited in the following pattern(s):

Questions:

Last Updated: Nov. 8, 2021