Beyond a prolonged QT interval

A 14-year-old girl was admitted with generalized tonic-clonic convulsions for 2min along with tongue biting. Her family reported previous recurrent attacks of muscle cramps and carpo-pedal spasms of four months’ duration prior to admission but they had never previously sought medical help. The patient had a good appetite and no diarrhea, with no prior history of cardiovascular disease or symptoms. She was not on any regular medications. She lived mainly indoors, avoided sunlight, and wore a veil outdoors mainly due to traditional beliefs. Her family noticed an abnormal gait eight months prior to presenting at our clinic and she usually asked for help to stand from a squatting position.