Trichorhinophalangeal Syndrome Type 2: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Trichorhinophalangeal Syndrome Type 2?
A primary care doctor is usually the first person to see. They can spot the signs, order X-rays, and refer the person to specialists. A genetics specialist can confirm the diagnosis, and an orthopedic surgeon may remove painful bone growths. Physical therapists and ear doctors may also help.
What it is
Trichorhinophalangeal syndrome type 2 is a rare condition that a person is born with. It affects hair, the nose, bones, and growth. The name describes the three body parts it touches most. "Tricho" refers to hair, "rhino" refers to the nose, and "phalangeal" refers to the bones in the fingers and toes.
People with this condition often have thin hair, a nose with a wide tip, and shorter fingers and toes. Many also have noncancerous bone growths called exostoses.
Symptoms
Symptoms vary a lot from person to person. Common features include thin scalp hair, a large or bulbous nose, and short fingers and toes. The fingers may curve toward the ring finger, a shape doctors call clinodactyly.
Causes and who gets it
This condition is caused by a missing piece of genetic material on chromosome 8, in a region that includes genes called TRPS1 and EXT1. It is also known as Langer-Giedion syndrome. In most cases the change happens by chance. Sometimes it is inherited from a parent, and each child then has a one in two chance of having it.
How doctors diagnose it
Doctors look at the person's features and order X-rays to check for bone growths and bone shape. A genetics specialist can confirm the diagnosis with a test for the missing piece of chromosome 8.
Treatment
There is no cure, but treatment can ease symptoms. Painful bone growths can be removed with surgery. Physical therapy can help with stiff or loose joints, and doctors can track growth over time. Some people need care for hearing problems or learning and development.
When to see a doctor
See a doctor for unexplained bone growths, pain in the arms or legs, or joints that move in unusual ways. Children who are much shorter than expected, or who have unusual finger or toe shapes, should be checked too. Early care can help prevent problems such as nerve pain from bone growths.
Common questions
Is trichorhinophalangeal syndrome type 2 life threatening?
No, it is not usually life threatening. The bone growths are not cancer. Most people live full lives, though some need treatment for pain, joint problems, or hearing loss.
Can the condition be passed to my children?
Yes, it can be. When one parent has the condition, each child has a one in two chance of having it. A genetics specialist can explain this in more detail and offer testing.
Do the bone growths need to be removed?
Not always. Many growths cause no problems and can simply be watched. Doctors may suggest surgery when a growth causes pain or presses on a nerve or tendon.
Will my child grow to a normal height?
Some people with this condition are shorter than average, but height varies from person to person. A doctor can track growth over time and explain what to expect.
Sources
- NIH Genetic and Rare Diseases Information Center - Langer-Giedion syndrome
- MedlinePlus - Trichorhinophalangeal syndrome type I: MedlinePlus Genetics
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.
