well i'd sure like to hear the backstory on this one. you're referring to the als association "ice bucket challenge " i presume? the one where people pour a bucket of ice water over their heads and donate money to the als association? if that's what we're talking about then i would cautiously answer your question with a "no " while also stating i'm not a doctor and cannot give medical advice. i'm betting you're asking this question because someone poured a bucket of ice water over their head and then fainted. this would not be uncommon and i'm surprised we haven't heard of it happening before. why would dumping a bucket of ice water over your head possibly cause you to faint? it's called " the vagal effect. " dunking your face in icy water causes your heart rate to suddenly slow way down. this is often referred to as the "diving reflex. " if the heart rate slows suddenly you can pass out. usually this lasts for only a few moments. it is not an indication of an underlying heart problem. interestingly you can also faint by holding your breath and bearing down hard to push out a bowel movement -- another way to suddenly slow your heart rate down. think about that before you try to rush your bowels in the bathroom next time. wishing you well!
can the als challange cause an undiagnosed heart condition to appear?