First COVID-19, Then Myasthenia Gravis: Coincidence or Causal?


Senior Member
Three patients developed MG after coronavirus infection
Myasthenia gravis, an autoimmune neurologic disorder, was associated with COVID-19 in three patients in Italy.
Symptoms of myasthenia gravis (MG) appeared 5 to 7 days after fever onset in three patients who had no previous neurologic or autoimmune disorders, reported Domenico Restivo, MD, PhS, of Garibaldi Hospital in Catania, and colleagues, in a case report in the Annals of Internal Medicine.
"This finding is important because the association between COVID-19 infection and myasthenia gravis has not been reported before," Restivo said.
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Senior Member
MG is a classical post-viral condition. That it hadn't been reported before might just be a huge bias - a bias I've experienced myself with an MG neurologist. I suspect that many assume that MG can only be diagnosed in absence of other conditions. This means COVID-19 excludes MG. ME and Post-COVID exclude MG. Nothing is found because nobody looks.