What is Congenital Myasthenia?

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Congenital myasthenia is an inherited disorder that affects the transmission of signals to the muscles. It results from a variety of genetic defects at the molecules associated with neuromuscular transmission. Congenital myasthenia is not the same as myasthenia gravis, which is an autoimmune disorder. More than a dozen congenital myasthenic syndromes have been classified. Symptoms are usually noticed in early childhood and include drooping eyelids, facial weakness, and limb weakness. Parents of children with congenital myasthenia frequently show no symptoms of the disorder

Is there any treatment?
Anticholinesterase drugs, as well as guanidine and other drug therapy that facilitates neuromuscular transmission, may improve some symptoms of congenital myasthenia.

What is the prognosis?
Several cases of congenital myasthenia improve or stabilize with drug therapy. In other cases, therapy is not effective. Adverse respiratory reactions may occur as a result of drug therapy, but they can be treated.

What research is being done?
The NINDS supports research on neuromuscular disorders such as congenital myasthenia, aimed at increasing scientific understanding of these disorders and finding ways to prevent, treat, and cure them.

Synonyms: Myasthenia - Congenital