Compound muscle action potential (CMAP) amplitude declines during a paralytic attack in patients with hypokalemic periodic paralysis (HPP). However, serial motor nerve conduction studies in HPP have not been commonly reported. We report a 9 year old girl with HPP, who had severely reduced CMAPs in all motor nerves at presentation during the episode of quadriparesis. However, the amplitude of CM...

Chondrocalcinosis associated with Gitelman syndrome (GS) presents in young adults with either no symptoms or joint pain, muscle weakness, muscle cramps, paresthesias, episodes of tetany, or hypokalemic paralysis. Spinal cord meningiomas present with gradual onset of lower extremities weakness, numbness, pain, or balance problem. We report a 76 year old gentleman who presented with gradually pro...

Andersen-Tawil Syndrome (ATS) is a rare potassium channel disorder, characterized by episodic weakness, ventricular arrhythmias and dysmorphic features (short stature, scoliosis, clinodactyly, hypertelorism, small or prominent low set ears, micrognathia and broad forehead). We report a case of hypokalemic periodic paralysis with dysmorphic facial features and ventricular arrhythmia resembling A...