I am 74 year's old man, enjoying a normal health. About 2 years back my blood's sugar was little bit higher (PP-155) and now it is in normal range. My blood pressure is also normal. 15 days back, while I was sleeping I felt a sudden push, back side of my head , I fainted for a moment and sweating full of my body as like as just I took bath, I was feeling very weak and vomiting, gradually situation come stable. Once again just 12 hours later and there after another 12 hours later same symptoms was found. As soon as I admitted Rabindranath Tagore International Institute of cardiac Science under cardiologist Dr. Pandey. They did all necessary examines like ECG , EEG , holter monitoring, ct Brain, Echo screening.Digital X-Ray Chest pa Lipid profile, Glucose Instant, but everything was very much normal and nothing abnormal was found and Doctor discharge me, no medicine was applied for, But I am worried, If the situation or circumstance happen once again what shall I do, and it is how much riskable?