Marshall Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Marshall Syndrome?
A primary care doctor, such as a family doctor or pediatrician, usually coordinates care. People with Marshall syndrome also see specialists, including an ophthalmologist for eyes, an otolaryngologist for ears and throat, and sometimes a geneticist. 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 it is
Marshall syndrome is a rare genetic condition, passed down through families and present from birth. It affects connective tissue, the material that supports and holds the body together. People with Marshall syndrome often have certain facial features, hearing loss, and eye problems.
Symptoms
The signs of Marshall syndrome can differ a lot from person to person. Common features include a flat facial appearance with a flat nasal bridge, wide-set eyes, and a small lower jaw. Hearing loss is common and can be present from birth or develop later, often with frequent ear infections. Eye problems can include severe nearsightedness and a higher risk of retinal detachment.
Causes and who gets it
Marshall syndrome is caused by a change in the COL11A1 gene, which helps the body make collagen, a key part of connective tissue. It is usually inherited in an autosomal dominant pattern, meaning a child only needs the changed gene from one parent. It is very rare and affects boys and girls alike.
How doctors diagnose it
Doctors look at a person's features, medical history, and family history, then do eye exams and hearing tests. A genetic test can confirm the diagnosis by finding the changed COL11A1 gene.
Treatment
There is no cure, but treatment helps manage the symptoms. Glasses, regular eye exams, and sometimes surgery can protect vision, while hearing aids treat hearing loss. Ear infections are treated with medicine or ear tubes.
When to see a doctor
See a doctor if a child has unusual facial features along with vision or hearing problems, or a family history of the condition. Frequent ear infections, trouble seeing the board at school, or unusually flexible joints are also reasons for a checkup. Early testing matters because treating hearing and vision problems early helps children develop normally.
How a direct primary care or concierge doctor fits in
A direct primary care doctor is paid with a flat monthly fee instead of billing insurance for each visit. A concierge doctor works similarly but usually charges more and often works alongside insurance. Because these doctors have smaller patient lists, they often have more time for visits, which can help with a condition like Marshall syndrome that needs regular follow-up. They can manage routine care and coordinate with specialists.
Common questions
Is Marshall syndrome the same as Stickler syndrome?
They are very similar, and both involve the COL11A1 gene. Some researchers consider Marshall syndrome a variant of Stickler syndrome, while others treat them as separate conditions.
Can Marshall syndrome be prevented?
No, it cannot be prevented because it is inherited. Families with a history can meet with a genetic counselor to understand the chances of passing it on.
Will my child be able to live a normal life?
Most people with Marshall syndrome can go to school, work, and live independently. Hearing aids, glasses, and other treatments help manage the symptoms, though how much the condition affects daily life varies.
Does Marshall syndrome affect intelligence?
Marshall syndrome does not directly affect intelligence. However, untreated hearing or vision problems can make learning harder, which is why early treatment matters.
Sources
- NIH Genetic and Rare Diseases Information Center - Marshall syndrome
- MedlinePlus - Connective Tissue Disorders
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.
