Fig. 1From: Two case reports of distal upper limb weakness following influenza-like illness: an emerging pattern of para-infectious myositis in adultsRepresentative EMG showing myopathic changes evidenced by multiple polyphasic motor unit action potentials (MUAPs), which are of small amplitude (< 0.5 mV), and some of which are of short duration (5–10 ms)Back to article page