My 86 yr old mother is having episodes , that are becoming more frequent. It begins with her getting a strange feeling in her forehead, says it causes fuzzy thinking and she can feel it moving down her face, neck, chest and stomach. She breaks out in profuse sweat and become very weak. She s had blood work, ekg s, chest xrays, and anything else that the dr s can think of and everything appears normal. She s had blood sugar and bp done during the episodes and all is normal. Spent 3 hrs in the ER with her today and they found nothing. They want her monitored for a week. Any thoughts on what this could be?