Overview
46,XY difference of sex development (DSD) induced by maternal exposure to endocrine disruptors is a rare condition in which a baby who is genetically male (having one X and one Y chromosome, written as 46,XY) develops with atypical or incomplete male physical features. This happens not because of a change in the baby's own genes, but because the mother was exposed during pregnancy to certain chemicals known as endocrine disruptors. These chemicals — found in some pesticides, plastics, industrial compounds, and other environmental sources — can interfere with the hormones that guide normal sexual development in the growing baby. The effects can range widely. Some babies may be born with genitals that appear ambiguous, meaning they do not look clearly male or clearly female. Others may have undescended testes, a small penis (micropenis), or a condition called hypospadias where the urinary opening is not at the tip of the penis. Internally, the reproductive organs may also be incompletely developed. The severity depends on the type of chemical, the dose, and the timing of exposure during pregnancy. Treatment is individualized and may include hormone therapy, surgical correction of genital differences, and long-term psychological support. A multidisciplinary team typically manages care. Because this condition is caused by environmental exposure rather than an inherited genetic mutation, it does not follow a traditional inheritance pattern. Research into the specific chemicals responsible and their mechanisms is ongoing, and awareness of this condition is growing as environmental health concerns increase.
Also known as:
Key symptoms:
Ambiguous genitalia at birthSmall penis (micropenis)Urinary opening in an unusual position on the penis (hypospadias)Undescended testiclesIncomplete development of male reproductive organsPossible presence of some female-appearing genital structuresDelayed or absent puberty in some casesInfertility or reduced fertility later in lifePossible hormonal imbalancesPsychological distress related to genital appearance or gender identity
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,XY difference of sex development induced by maternal exposure to endocrine disruptors.
View clinical trials →Clinical Trials
View all trials with filters →No actively recruiting trials found for 46,XY difference of sex development induced by maternal exposure to endocrine disruptors at this time.
New trials open frequently. Follow this disease to get notified.
Specialists
View all specialists →No specialists are currently listed for 46,XY difference of sex development induced by maternal exposure to endocrine disruptors.
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,XY difference of sex development induced by maternal exposure to endocrine disruptors.
Community
No community posts yet. Be the first to share your experience with 46,XY difference of sex development induced by maternal exposure to endocrine disruptors.
Start the conversation →Latest news about 46,XY difference of sex development induced by maternal exposure to endocrine disruptors
No recent news articles for 46,XY difference of sex development induced by maternal exposure to endocrine disruptors.
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 specific type of difference of sex development does my child have, and how severe is it?,Have all genetic causes been ruled out, and what evidence points to an environmental cause?,What surgeries or procedures might be needed, and when is the best time to do them?,Will my child need hormone therapy, and if so, when would it start?,What are the expected effects on fertility, and are there options to preserve fertility?,Can you recommend a psychologist or counselor experienced with differences of sex development?,Are there support groups or patient organizations you recommend for our family?
Common questions about 46,XY difference of sex development induced by maternal exposure to endocrine disruptors
What is 46,XY difference of sex development induced by maternal exposure to endocrine disruptors?
46,XY difference of sex development (DSD) induced by maternal exposure to endocrine disruptors is a rare condition in which a baby who is genetically male (having one X and one Y chromosome, written as 46,XY) develops with atypical or incomplete male physical features. This happens not because of a change in the baby's own genes, but because the mother was exposed during pregnancy to certain chemicals known as endocrine disruptors. These chemicals — found in some pesticides, plastics, industrial compounds, and other environmental sources — can interfere with the hormones that guide normal sexu
How is 46,XY difference of sex development induced by maternal exposure to endocrine disruptors inherited?
46,XY difference of sex development induced by maternal exposure to endocrine disruptors follows a sporadic inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does 46,XY difference of sex development induced by maternal exposure to endocrine disruptors typically begin?
Typical onset of 46,XY difference of sex development induced by maternal exposure to endocrine disruptors is neonatal. Age of onset can vary across affected individuals.