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Seronegative Myasthenia Gravis is a rare form of MG where blood tests don't show the typical antibodies (AChR or MuSK) that are usually present in people with MG. About 1 in 10 people with MG have this seronegative type, making it the rarest form of the condition.

People with seronegative MG often experience symptoms Show Full Answer

Seronegative Myasthenia Gravis is a rare form of MG where blood tests don't show the typical antibodies (AChR or MuSK) that are usually present in people with MG. About 1 in 10 people with MG have this seronegative type, making it the rarest form of the condition.

People with seronegative MG often experience symptoms primarily affecting their eyes (ocular) and face/throat (bulbar) areas, including double vision, droopy eyelids, and difficulties with speaking or swallowing. This form tends to affect younger people, including young adults and children, who often experience a milder disease course. They're more likely to have ocular myasthenia gravis rather than generalized MG, and have a lower risk of thymus gland tumors.

While diagnosis can be more challenging without the typical antibody markers, neurologists can still diagnose seronegative MG through careful evaluation of symptoms and other testing methods.

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