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Charcot-Marie-Tooth disease is a group of disorders that affect the peripheral nerves, the nerves running from outside the brain and spine. Defects in many different genes cause different forms of this disease. Common symptoms may include foot drop, foot deformity, loss of lower leg muscle, numbness in the foot or leg, “slapping" gait (feet hit the floor hard when walking), and weakness of the hips, legs, or feet. There is currently no cure for Charcot-Marie-Tooth disease, but physical therapy, occupational therapy, braces and other orthopedic devices, pain medication, and orthopedic surgery can help manage and improve symptoms.
There are over 40 types of Charcot-Marie-Tooth disease. You can search for more information on a particular type of Charcot-Marie-Tooth disease from the GARD Home page. Enter the name of the condition in the GARD search box, and then select the type from the drop down menu.
Source: GARD Last updated on 05-01-20
Charcot-Marie-Tooth disease (CMT) is a group of progressive disorders that affect the peripheral nerves and result in problems with movement and sensation. In CMT type 2 (CMT2), the motor system is more prominently involved than the sensory system, although both are involved. Individuals with this condition typically have slowly progressive weakness and atrophy of distal muscles in the feet and/or hands usually associated with depressed tendon reflexes and mild or no sensory loss. There is significant clinical overlap with CMT1. The subtypes of CMT2 are similar clinically and distinguished only by molecular genetic findings.
Charcot-Marie-Tooth disease type 2C (CMT2C) is a very rare form of CMT. Individuals with this condition may have diaphragm or vocal cord paresis in addition to the other problems associated with CMT. Mild sensory loss has also been noted in some individuals. CMT type 2C is caused by mutations in the TRPV4 gene on chromosome 12q24.
Last updated on 05-01-20
Charcot-Marie-Tooth disease (CMT) is a progressive disorder, meaning that it is expected to get worse over time. In general, it is difficult to predict the exact course that the progression is expected to take. For some types of CMT there is natural history information that can guide an average course of the disorder. CMT2C shows quite a bit of phenotypic variability, with marked intrafamilial variability of disease onset and severity. Earlier onset appears to be associated with increased disease severity. Respiratory failure due to intercostal muscle and diaphragm involvement may lead to shortened life expectancy. Reports in the medical literature describe patients who range from nearly asymptomatic to individuals requiring respiratory assistance to those who are wheelchair-bound and in need of assistance in all activities of daily living.
Last updated on 05-01-20
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