"If you've already had diarrhea, you probably won't v*"

[ditchy_jon]

I see a lot of people claim that having d* (due to FP*, SV*, whatever) means you're unlikely to v* as well. In other words, if it's coming out one "end" it probably won't come out the other.

I'm feeling fine right now, but just wondering about this. Is it true? and if so, why?

If it's true, I think it would be somewhat reassuring for many of us! Although d* is no fun, I'd bet that everyone here would prefer it to v*!

Basically if you have diarreah for say 8 hours, it means the worst part (start) of the virus has taken hold and from then on your body mounts a defence and you start slowly feeling better. therefore if you brain hasn't engaged it vomiting mechanism by then, it is very unlikely it will, as the virus is in a decline and therefore your immune system does not need to start the vomiting cycle to remove the virus. Hope that makes sense.