Phocomelia: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Phocomelia?
A primary care doctor often coordinates care and refers children to specialists, including an orthopedic surgeon, a geneticist, and therapists. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is phocomelia?
Phocomelia is a rare condition a person is born with in which one or more arms or legs did not form completely before birth. The limb may be very short, with the hand or foot sitting close to the body.
The word phocomelia comes from Greek words meaning "seal" and "limb." The long bones of an arm or leg do not grow as they should, so the hand or foot sits close to the trunk.
Symptoms
The main sign is a limb that is much shorter than normal. Fingers or toes may be joined, missing, or shaped differently, and some children have heart problems, hearing loss, or other differences.
Causes and who gets it
Phocomelia is caused by problems in how a baby's limbs form during early pregnancy. Some cases are linked to gene changes passed down from parents who carry the change without having the condition themselves; in others, the cause is not known. In the 1960s, the medicine thalidomide caused many cases and is now tightly controlled.
How doctors diagnose it
Phocomelia is often seen on an ultrasound before birth, and doctors may then order genetic testing. After birth, a doctor may use X-rays to see which bones are missing or small.
Treatment
No treatment makes the limb grow normally; care focuses on helping the child use their body well and live independently.
- Prosthetics, or artificial limbs and devices that help with reaching, gripping, or walking.
- Occupational therapy for daily tasks such as dressing and eating.
- Physical therapy to build strength, balance, and movement skills.
- Surgery in some cases, to improve how a limb works.
Many people with phocomelia learn to do most daily activities independently.
When to see a doctor
If a limb difference is found during pregnancy, parents are usually referred to a high-risk pregnancy specialist and a genetic counselor. After birth, the child should be followed by a care team that watches growth and related health problems.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually costs more and often works alongside insurance. Either can manage routine care, including checkups, referrals, and follow-up, and will refer patients to specialists for surgery, genetic testing, and therapy.
Common questions
Can phocomelia be cured?
No. The limb did not form fully before birth, so it cannot be made whole. Prosthetics, therapy, and sometimes surgery can help a person do more with the limb they have. Results differ from person to person.
Will my other children have it?
It depends on the cause. Some cases come from gene changes that can be passed down, while others happen by chance. A genetic counselor can test family members and explain the chances for future pregnancies.
Can a child with phocomelia live a normal life?
Many children with phocomelia go to school, play, work, and live independently. The outlook depends on how severe the limb differences are and whether other organs are affected. Each person's path is different.
Is thalidomide still a risk today?
Thalidomide is still prescribed for a few conditions, but it is tightly controlled. Pregnant people are warned not to take it. Programs exist to prevent exposure during pregnancy.
Sources
- NIH Genetic and Rare Diseases Information Center - Congenital absence of upper arm and forearm with hand present
- MedlinePlus - Birth Defects
- Centers for Disease Control and Prevention - About Birth Defects | Birth Defects
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.
