case_images: PMC9253533_01
case_images: SFEMG jitter by frontal muscle. SFEMG, single fiber electromyography; SFJ, single fiber jitter.
case_images: fneur-13-906402-g0001.jpg
case_images: PMC9253533_01_fneur-13-906402-g0001.jpg
case_images: F1
case_images: This disorder was diagnosed 2 years before the pandemic onset by electromyography (EMG) and frontal muscle jitter study at the neurology unit of our hospital (Figure 1).