What Causes Sudden Vibration Of Hands Followed By Unconsciousness?

i am 30 year old i am doing private company now days 3 month before sudenly sliped on ground & my hand is viberating some time i am totaly unconsuios after 5 min i am very shock my self i don"t no what happen . recentley 3 times happen like this first time in my life i am upset about this please can you help me what i have to do which doctor suiteble