Partial Androgen Insensitivity Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Partial Androgen Insensitivity Syndrome?
A primary care doctor often coordinates care. The relevant specialist is usually an endocrinologist; some people also see a urologist or a geneticist. A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can manage routine monitoring and refer to specialists when needed.
What it is
Partial androgen insensitivity syndrome is a rare genetic condition that affects how the body responds to male sex hormones called androgens, such as testosterone. The body makes these hormones, but the cells do not respond fully because of a change in the gene for the androgen receptor. Effects can range from mild to more noticeable. People with the condition are genetically male, with one X and one Y chromosome. It is present from birth but not always found right away.
Symptoms
Symptoms vary a lot. Some babies are born with atypical genitalia, while others have mostly typical male genitals with smaller than expected features. During puberty, some develop breast tissue, called gynecomastia. Body hair may be sparse, the voice may not deepen as expected, and some people have undescended testicles.
Causes and who gets it
The condition is caused by a mutation in the AR gene on the X chromosome. When the androgen receptor does not work properly, androgens cannot send their usual signals to the body's cells. It is usually inherited from the mother, who typically has no symptoms, though sometimes the change happens for the first time in a child. The condition is rare.
How doctors diagnose it
Doctors often start with a physical exam and family history. Blood tests measure hormone levels, and genetic testing can confirm a change in the AR gene. Ultrasound may be used to check internal organs.
Treatment
Treatment depends on the person's age, anatomy, and goals. Options include hormone therapy and surgery to move undescended testicles, repair a hernia, or change the appearance of the genitals. People with undescended testicles have a higher risk of germ cell tumors, so regular monitoring is usually recommended. Ongoing care often involves a team of specialists.
When to see a doctor
A doctor should be involved if a baby is born with atypical genitals or if puberty seems delayed or unusual. Adults with this condition should have regular checkups to monitor hormone levels and tumor risk.
Common questions
Can partial androgen insensitivity syndrome be cured?
There is no cure because the condition is caused by a gene change. Treatment can manage symptoms and support health, but it does not fix the underlying receptor problem. Outcomes differ from person to person.
Can people with this condition have children?
Fertility is often reduced, and many people with the condition are not able to father children without help. Some options exist through fertility specialists. A doctor can explain what may be possible in a specific case.
Should undescended testicles be removed?
Doctors often recommend either moving them into the scrotum or removing them, because hidden testicles have a higher risk of tumors. The decision depends on the person's age, anatomy, and preferences. An endocrinologist and a surgeon usually help make this plan together.
Can a person find out if they carry the gene change?
Yes. Genetic testing can show whether someone carries a change in the AR gene. A genetic counselor can help a person understand what the results mean for them and their family.
Sources
- MedlinePlus Genetics - Androgen insensitivity syndrome
- NIH Genetic and Rare Diseases Information Center - Androgen resistance syndrome
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
