A patient is experiencing left ankle muscle weakness and foo…
A patient is experiencing left ankle muscle weakness and foot drag when walking greater than 10 minutes for the past 3 months. Muscle cramps and weakness in the right hand are also present for the past 3 weeks. Neuromuscular screening examination reveals 4-/5 MMT and fasciculations in the left extensor hallicus longus, left tibialis anterior, and right first dorsal interossei. Sensory testing for light touch and vibration of the UE and LE is normal. Which of the following conditions is most consistent with the patient’s signs and symptoms?