hi, i have had 3 episodes, all about a year apart that i cannot find the answer to. I've searched online for hours and cannot find anyone with similar experiences. id like to stress that i cannot connect these episodes to anything I've done personally. im always well hydrated, and havent been lacking a meal or anything. my symptoms are as followed: i start to get spotty vision, then my vision completely goes. the ringing in my ears is amplified and any other sounds sound muted or like im under water. i experience muscle weakness to the point where i cannot even hold my head up, my whole body becomes limp. my whole body sweats and i have a hard time speaking and thinking