I had a problem earlier .i was in class when my lower lip and my right hand started shivering my voice started to stammer ... i consulted a neurologist got a ct scan and mri but nothing was diagnosed. he told that it was due to anxiety and stress ..recently i was awake for 2 nights working and got the same attack again dis time with head ache and weakness and very bright light is disturbing and seeing white color for a long time spins my head .this time the doctor referred a psychiatrist. i dont know whats wrong with me , I'm also experiencing memory loss but nothing is being diagnosed .