Diseases, Conditions, Syndromes

What is myasthenia gravis and how does it affect sufferers?

Former tennis star Monica Seles has revealed she has been diagnosed with myasthenia gravis, a rare autoimmune condition that affects how the muscles work. The multiple Grand Slam champion says she was actually diagnosed three ...

Medications

FDA approves self-injection of Vyvgart Hytrulo

The U.S. Food and Drug Administration has approved a self-injection version of Vyvgart Hytrulo (efgartigimod alfa and hyaluronidase-qvfc) for the treatment of adult patients with generalized myasthenia gravis (gMG) who are ...

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Myasthenia gravis (from Greek μύς "muscle", ἀσθένεια "weakness", and Latin: gravis "serious"; abbreviated MG) is an autoimmune neuromuscular disease leading to fluctuating muscle weakness and fatiguability. It is an autoimmune disorder, in which weakness is caused by circulating antibodies that block acetylcholine receptors at the postsynaptic neuromuscular junction, inhibiting the excitatory effects of the neurotransmitter acetylcholine on nicotinic receptors throughout neuromuscular junctions. Myasthenia is treated medically with cholinesterase inhibitors or immunosuppressants, and, in selected cases, thymectomy. The disease incidence is 3–30 cases per million per year and rising as a result of increased awareness. MG must be distinguished from congenital myasthenic syndromes that can present similar symptoms but offer no response to immunosuppressive treatments.

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