Fig. 1From: Morvan’s syndrome and myasthenia gravis related to familial Mediterranean fever gene mutationsClinical and pathological findings in the present case. a, b Needle electromyography at rest shows neuromyotonic discharges around 450 Hz in the left first dorsal interosseous muscle (a) and myokymic discharges in the right thenar muscle (b). The black arrow in a indicates an insertional activity. c, d Analyses of MEFV gene mutations identified the heterozygous mutation L110P (c) and homozygous mutation E148Q (d)Back to article page