I am walking down the street when a crippling wave of vertigo and nausea hits me so hard I need to sit on nearby steps to avoid falling over. But the weakness is not going away. The nausea remains, along with an awful taste in my mouth. I experience the flavor of decay and despair. I feel as if I am in a deathtrap that is inches from closing. There is no apparent cause. I am a 23 year old man with normal health, no life-threatening illnesses or disabilities. If I go right now to the hospital,...