Charcot-Marie-Tooth Disease (CMT)
Charcot-Marie-Tooth Disease (CMT) is a group of inherited conditions that damage the peripheral nerves. It's also known as hereditary motor and sensory neuropathy (HMSN).
The peripheral nerves are found outside the main central nervous system (brain and spinal cord). They control the muscles and relay sensory information, such as the sense of touch, from the limbs to the brain.
People with CMT may have:
- Muscle weakness in the feet, ankles, legs and hands.
- An awkward way of walking (gait).
- Highly arched or very flat feet.
- Numbness in the feet, arms and hands.
The symptoms of CMT usually start to appear between the ages of five and 15, although they sometimes don't develop until well into middle age or later.
CMT is a progressive condition. This means the symptoms get slowly worse, making everyday tasks increasingly difficult.