Mohr Tranebjaerg Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Mohr Tranebjaerg Syndrome?
A primary care doctor is often the first doctor a family sees and coordinates care. Because this condition affects hearing, movement, and vision, care usually involves specialists such as an audiologist, a neurologist, an ophthalmologist, and a geneticist. A direct primary care doctor is paid a flat monthly fee instead of billing insurance, while a concierge doctor charges more and often works alongside insurance.
What it is
Mohr Tranebjaerg syndrome is a rare genetic condition passed down through families and present from birth. Also called deafness dystonia syndrome, it mainly affects hearing, movement, and sometimes vision. Only a small number of cases have been reported worldwide.
Symptoms
The first sign is usually hearing loss that begins in early childhood and often becomes profound by the teenage years. Many people develop dystonia, meaning muscles tighten and contract on their own, causing twisting movements and unusual body positions. Some also have trouble with balance and walking, and vision can be affected, often because of damage to the optic nerve that carries signals from the eye to the brain.
Causes and who gets it
The condition is caused by a change, called a mutation, in a gene known as TIMM8A, which helps tiny structures inside cells make energy. When the gene does not work, cells that need a lot of energy, such as nerve cells, have trouble doing their jobs. It is passed down in an X-linked pattern, so it mostly affects boys and men, while girls and women who carry the changed gene usually have no symptoms or only mild ones.
How doctors diagnose it
Doctors often start with a hearing test and an eye exam, and may order brain imaging scans. A genetic test using a blood or saliva sample can confirm the diagnosis by finding the change in the TIMM8A gene. Because the condition is so rare, doctors may consult genetics specialists.
Treatment
There is no cure, so treatment focuses on managing each symptom. Hearing loss is often treated with hearing aids or cochlear implants, which send sound signals directly to the hearing nerve. Muscle tightness and movement problems may be treated with medicines, physical therapy, or other therapies. Vision problems may be managed with glasses, low vision aids, or surgery in some cases.
When to see a doctor
Anyone with hearing loss in childhood should be checked by a doctor, especially if it runs in the family. Muscle tightness, twisting movements, balance problems, or vision changes are also reasons to seek care. Early evaluation helps doctors start supportive treatments sooner.
How a direct primary care or concierge doctor fits in
Either one can spend extra time with patients, coordinate team care, and refer the patient to the right specialist when needed.
Common questions
Is Mohr Tranebjaerg syndrome life threatening?
The condition itself does not usually shorten life. Most problems come from hearing loss, movement difficulties, and vision changes. These can be managed with supportive care. Each person's experience is different.
Can girls get Mohr Tranebjaerg syndrome?
The condition mostly affects boys and men because the changed gene sits on the X chromosome. Girls and women who carry the gene usually have no symptoms. Some may have mild hearing loss.
Can the hearing loss be prevented?
There is no known way to prevent the hearing loss caused by this condition. Hearing aids and cochlear implants can help many people hear better once hearing loss develops.
How common is this condition?
It is very rare. Only a small number of families with the condition have been reported in medical literature worldwide.
Sources
- NIH Genetic and Rare Diseases Information Center - Deafness dystonia syndrome
- MedlinePlus Genetics - Deafness-dystonia-optic neuronopathy 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.
