Living with Charcot-Marie-Tooth disease dominant intermediate B
An inherited nerve condition with mild to moderate, slowly worsening weakness and loss of feeling, sometimes with early cataracts.
Understanding Charcot-Marie-Tooth disease dominant intermediate B
It brings the usual features of Charcot-Marie-Tooth disease: weakness and wasting in the hands and feet, loss of feeling there, weak or absent reflexes, and foot differences. It is mild to moderately severe and slowly worsening. Some people have low neutrophils (a type of white blood cell) without symptoms, or early cataracts.
Signs & symptoms
Symptoms vary from person to person. GARD lists these among the most common:
- Wasting of muscles in the hands and feet
- Weakness in the hands and feet
- Loss of feeling in the hands and feet
- Reduced or absent reflexes
- Foot differences
- Early cataracts in some people
Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.
Diagnosis
- 1Talk with your doctor
Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.
- 2See a specialist
Specialists who may be involved include brain and nervous system specialists and genetic specialists.
- 3Consider genetic testing
Changes in DNM2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.
- 4Connect with expert centers
The Foundation for Peripheral Neuropathy may keep lists of experts for this condition.
Care & treatment
- Care team
- Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
- Expert care
- Expert lists: The Foundation for Peripheral Neuropathy
- Treatment
- GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
- Research
- Clinical trials and observational studies may be options. See the research section below.
General information, not medical advice. Your care team makes the decisions.
Everyday life
Living with a rare condition is easier with support.
- Connect with The Foundation for Peripheral Neuropathy and other patient organizations
- Keep notes on symptoms, changes and questions for appointments
- Ask about patient registries that help research
- Look into financial aid and travel resources for care visits
Quick facts
Changes in the DNM2 gene cause this condition. It is inherited in an autosomal dominant way, so one changed copy of the gene can cause it.
Also known as: autosomal dominant intermediate charcot-marie-tooth disease type b; charcot-marie-tooth disease caused by mutation in dnm2; charcot-marie-tooth disease dominant intermediate 1; charcot-marie-tooth disease dominant intermediate i; charcot-marie-tooth disease dominant intermediate type b; charcot-marie-tooth disease, axonal type 2m
Patient organizations
- The Foundation for Peripheral NeuropathyPeripheral neuropathy · United States
- Neuropathy Action FoundationPeripheral neuropathy · United States
You are more than your diagnosis
Perspectives from people navigating life with Charcot-Marie-Tooth disease dominant intermediate B.
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