15 Unusual Allergies: Water, Vibration, Sex

Adverse reactions to water, vibration, and sex are just three of the weird allergies some people have. Or maybe it's just Californians. Los Angeles TV station KTLA also includes exercise (those with "cholinergic urticaria" may find themselves covered in hives after braving the StairMaster) and electromagnetic fields (sufferers of "electrosensitivity syndrome" can suffer from nausea after being too close to cell phones) in its list of odd things that can cause allergic reactions. For the full list, click on through. (More allergies stories.)