Freeman-Sheldon Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Freeman-Sheldon Syndrome?
Care for Freeman-Sheldon syndrome often involves orthopedic surgeons, who treat bones and joints, and craniofacial surgeons, who work on the face and skull. Physical therapists and genetic counselors may help too. 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 Freeman-Sheldon syndrome?
Freeman-Sheldon syndrome, also called Freeman-Burian syndrome, mainly affects muscles in the face and skull and can often affect joints in the hands and feet. It causes contractures, which are permanent tightening of muscles, skin, and tendons that limits movement. It is rare, with an estimated 200 to 300 people affected worldwide.
The syndrome varies a lot. Some people have few differences, while others have severe contractures and spine curves.
Symptoms
Tight face muscles give a small mouth with pursed lips, which looks like whistling. Other signs and features can include:
- Deep folds in the skin between the nose and the corners of the mouth.
- Eyes that do not look in the same direction.
- Permanently bent fingers and toes.
- Fingers that all angle outward toward the little finger.
- Feet that turn inward and downward, called clubfoot.
- Curves in the spine, such as scoliosis, which is a sideways curve.
- Rib muscles that do not work well, which can make breathing or coughing harder.
- Trouble swallowing and slow weight gain.
- Speech problems or hearing loss.
Breathing complications can be life-threatening. Intelligence is unaffected in most people, but milestones may come later because of physical limits.
Causes and who gets it
Freeman-Sheldon syndrome is caused by changes, called variants, in the MYH3 gene. This gene makes a protein that is important for normal muscle development before birth. A small number of people have no MYH3 change, and their cause is unknown.
It follows an autosomal dominant pattern, so one changed copy of the gene is enough to cause it. Most cases come from new gene changes, with no family history. Some people inherit the change from one affected parent.
How doctors diagnose it
Doctors diagnose it mainly from physical findings. The key is a group of face features, including a whistling-face look, a small mouth, deep folds by the nose and mouth, and an H- or V-shaped dimple in the chin. Limb problems are common but do not decide the diagnosis.
A gene test is available, but it may not give an answer. Some people who clearly have the syndrome have no known gene change.
Treatment
There is no specific treatment for the syndrome itself. Long-term care aims to improve how well a person can function. Babies often need a soft diet and frequent small feedings.
Many people have several orthopedic surgeries, because the first surgery often gives a poor result and needs to be redone. The best results for limb problems come from care without surgery. For clubfoot, the Ponseti method, a casting method, is described, and bracing is usually needed afterward. Bracing and physical therapy must be kept up, or hand and wrist tightness is hard to treat.
Anesthesia, the medicine that keeps a person asleep during surgery, is known to be difficult in this syndrome, and guidelines exist for it. Problems in infancy seem to settle and improve with age for most people.
When to see a doctor
Call 911 or go to the emergency room if someone has trouble or abnormal breathing, bluish or grey skin, or a lack of alertness.
See a doctor if a baby has trouble feeding or is not gaining weight. Also see a doctor if a curve in the spine seems to be getting worse.
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 charges more and often works alongside insurance. Such a doctor can do an evaluation, follow up over time, and help coordinate the many specialists involved.
Common questions
Why is it called whistling face syndrome?
It gets that name because the small mouth with pursed lips looks like whistling. The tight facial muscles, called contractures, cause this look.
Does Freeman-Sheldon syndrome affect intelligence?
In most people, no. Milestones may come later because of physical limits.
Is Freeman-Sheldon syndrome inherited?
It can be, but most cases are new gene changes with no family history. When it is inherited in the usual dominant way, the risk of passing it on is 50%.
How common is Freeman-Sheldon syndrome?
It is rare. It is estimated to affect 200 to 300 people worldwide.
Sources
- MedlinePlus - Freeman-Sheldon syndrome: MedlinePlus Genetics
- PubMed Central (National Library of Medicine) - Freeman-Burian 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.
