ok so i am 15 years old; maybe once a year or twice i get this werid attack type thing; im not sure what to call it. but its out of no where most of the time. i start to shake, then i lose vision,and i can't hear anything and fall over and have no control over my body, it last 45 seconds to a minute the vision problems then i regain my vision buts its blurry. i get very light headed and dizzy afterwords and my mouth and tounge go numb for quite a long time. and i feel light headed for a very long time. the first time this happend was 2 years ago; i got up off the couch and then fell over. and my mom started screaming but i didnt hear her, then i simply got up and started laughing for no reason. the second time it happend was ither last year or very early this year, i was standing in the bathroom doing my hair with my step mom and i just dropped the bruch and started screaming bc i couldnt see or move anything she carried me into my room and gave me gatorade and i felt better. the third time was tonight, i got outof bed to go pee i got to the door and tryed to move the fan i dont even recall anything other than shaking fruryously and have a tight grip on the fan. then i got up and felt very light headed, and my mouth was comepletly numb and has been for aout 20 minutes now. im afraid these could be really dangourse and idk what it is. any help?