I experience sudden attacks after I try to concentrate on some mental work or I am in mental tension. During these attacks, initially I experience fatigue. Then I feel numbness in my hands. Gradually, my hands starts shaking. I become unable to concentrate. My breath rate increases. Within 30 minutes the numbness increases to my whole body, tongue, lips, hands, fingers, feet, it feels like ants are crawling in them. I feel very warm inside and unable to click even a mouse button. At peak level, I am unable to sit or breath, heart rate increases, unable to speak clearly and it seems I will lose consciousness, but I never lose it, I am constantly aware of my surrounding during this time. This situation improves after 30 minutes whether with treatment or without treatment. The whole duration of such attacks is around 1 to 2 and half hour. After these, I feel very weak. My ECG, CHEST XRAY, BLOOD SUGAR, BLOOD PRESSURE, is normal as from the reports while I was taken to hospitals, during such attacks. I got such situation for first time last August. The doctor treated with some injections and glucose bottles.In March 2017, I got such attacks three times. Almost same treatment. In April, I got only one attack, after which the doctor prescribed glucose drips. My situation improved and I felt no attacks. Then, it again appeared on 6 May, almost same treatment. Then yesterday and I couldn't got any treatment, and situation improved automatically after 2 or 3 hours though, I am still feeling weak. My grip in objects is reduced. My 2 kg weight lost in these two months. I am a smoker. My lips are dry always since childhood. Constant morning little cough for more than three years. I drink enough water. I am in doubt. Either this condition is due to stress because it always happen when I think a lot about my, or my business, or my exams or finance. Or it maybe due to type 2 diabetes, because I remain good when I constantly drink glucose or eat fruits like watermelon or grapes.