Overview
46,XX difference of sex development (DSD) induced by endogenous maternal-derived androgen is a rare condition in which a baby who is genetically female (having two X chromosomes, or 46,XX) is exposed to unusually high levels of male hormones (androgens) while developing in the womb. These androgens come from the mother's own body rather than from an outside source. Common maternal causes include androgen-producing tumors of the ovary (such as luteomas or Krukenberg tumors), poorly controlled conditions like polycystic ovary syndrome, or rarely other hormone-producing growths that arise during pregnancy. Because the developing baby is exposed to excess androgens during critical stages of genital formation, the baby may be born with external genitalia that appear more masculine or ambiguous, even though the internal reproductive organs (uterus, ovaries, fallopian tubes) are typically female and normal. The degree of genital changes can range from mild clitoral enlargement to more significant ambiguity that makes it difficult to determine the baby's sex at birth. The good news is that once the baby is no longer exposed to the mother's excess androgens after delivery, the condition does not progress. In many cases, the masculinization of the genitalia may partially resolve on its own over time. Treatment focuses on identifying and addressing the source of excess androgens in the mother, careful evaluation of the baby's anatomy, and, when needed, surgical or hormonal management. A multidisciplinary team including endocrinologists, geneticists, urologists, and psychologists typically guides care. This condition is distinct from congenital adrenal hyperplasia (CAH), which is the most common cause of 46,XX DSD and arises from the baby's own adrenal glands.
Also known as:
Key symptoms:
Ambiguous genitalia at birthEnlarged clitoris (clitoromegaly)Partial fusion of the labial foldsUrogenital sinus (single opening instead of separate urethral and vaginal openings)Normal internal female organs (uterus, ovaries, fallopian tubes)Darkening or increased pigmentation of genital skinDifficulty determining sex at birthMother may show signs of excess male hormones during pregnancy such as acne, deepened voice, or excess hair growth
Sporadic
Usually appears on its own, not inherited from a parent
Neonatal
Begins at or shortly after birth (first 4 weeks)
Treatments
No FDA-approved treatments are currently listed for 46,XX difference of sex development induced by endogenous maternal-derived androgen.
View clinical trials →Clinical Trials
View all trials with filters →No actively recruiting trials found for 46,XX difference of sex development induced by endogenous maternal-derived androgen at this time.
New trials open frequently. Follow this disease to get notified.
Specialists
View all specialists →No specialists are currently listed for 46,XX difference of sex development induced by endogenous maternal-derived androgen.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to 46,XX difference of sex development induced by endogenous maternal-derived androgen.
Community
No community posts yet. Be the first to share your experience with 46,XX difference of sex development induced by endogenous maternal-derived androgen.
Start the conversation →Latest news about 46,XX difference of sex development induced by endogenous maternal-derived androgen
No recent news articles for 46,XX difference of sex development induced by endogenous maternal-derived androgen.
Follow this condition to be notified when news becomes available.
Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.What was the source of the excess androgens during pregnancy, and has it been treated in the mother?,How significant is the genital difference in my child, and will it change over time on its own?,Is surgery recommended, and if so, what are the risks, benefits, and timing?,Has congenital adrenal hyperplasia been fully ruled out?,Will my child go through normal female puberty and have normal fertility?,What psychological support services are available for our family?,Is there any risk of this happening again in a future pregnancy?
Common questions about 46,XX difference of sex development induced by endogenous maternal-derived androgen
What is 46,XX difference of sex development induced by endogenous maternal-derived androgen?
46,XX difference of sex development (DSD) induced by endogenous maternal-derived androgen is a rare condition in which a baby who is genetically female (having two X chromosomes, or 46,XX) is exposed to unusually high levels of male hormones (androgens) while developing in the womb. These androgens come from the mother's own body rather than from an outside source. Common maternal causes include androgen-producing tumors of the ovary (such as luteomas or Krukenberg tumors), poorly controlled conditions like polycystic ovary syndrome, or rarely other hormone-producing growths that arise during
How is 46,XX difference of sex development induced by endogenous maternal-derived androgen inherited?
46,XX difference of sex development induced by endogenous maternal-derived androgen follows a sporadic inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does 46,XX difference of sex development induced by endogenous maternal-derived androgen typically begin?
Typical onset of 46,XX difference of sex development induced by endogenous maternal-derived androgen is neonatal. Age of onset can vary across affected individuals.