Myotonia Congenita is a rare genetic neuromuscular disorder characterized by delayed muscle relaxation after voluntary contraction, often referred to as 'stiff muscles'. Symptoms typically manifest in childhood, with difficulty moving after resting, such as standing up from a seated position.

Myotonia Congenita FAQ


What causes Myotonia Congenita?

It's primarily caused by genetic mutations affecting chloride channels in muscles.

Is Myotonia Congenita hereditary?

Yes, it's inherited in an autosomal dominant pattern.

What are the main symptoms of Myotonia Congenita?

Delayed muscle relaxation, stiffness, and difficulty moving after rest.

How is Myotonia Congenita diagnosed?

Through clinical evaluation, electromyography (EMG), and genetic testing.

Is there a cure for Myotonia Congenita?

No cure exists, but symptoms can be managed with medication and physical therapy.

What medications treat Myotonia Congenita?

Mexiletine, phenytoin, and gabapentin are commonly used.

Can children have Myotonia Congenita?

Yes, symptoms often appear in childhood.

Does Myotonia Congenita affect lifespan?

Generally, it does not significantly reduce life expectancy.

How does heat help with Myotonia Congenita?

Warm-up exercises or heat application can temporarily alleviate stiffness.

Is surgery an option for Myotonia Congenita?

Rarely; surgical intervention is not typically part of standard treatment.

Can physical therapy help manage symptoms?

Yes, regular exercise and stretching can improve muscle function.

What triggers Myotonia Congenita episodes?

Sudden movements after rest, cold temperatures, or stress.

How common is Myotonia Congenita in Malaysia?

It's a rare condition globally, with no specific prevalence data for Malaysia.

Does Myotonia Congenita qualify for disability in Malaysia?

Severe cases may be eligible; consult local social services for guidance.

What is the prognosis for Myotonia Congenita?

Most individuals lead active lives with proper management.

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