A 56-years-old lady with good past health, presented with recurrent syncope for one month. Each episode lasted for several minutes and proceeded by severe throat pain to both liquid and solid. Initial investigations including ECG, computed tomography of brain, routine blood test, echocardiogram and upper endoscopy were all normal. An electroencephalography captured an episode of LOC preceded by severe throat pain.
Prominent frontal slowing was observed during this episode but no definite epileptic discharge was seen. What could be the most probable diagnosis for this condition? *This image based case is from Docplexus editorial team for educative purpose only. Source: Haymarket