Originally posted by Charlie:

im getting poisoned for no particular reason
why?

Eeeeh.. Super wide question. Please elaborate.

1. Lags. The poisonous NPC bites you, but you don't see it because of lags
2. You're being bitten by leeches
3. You're being "spit at" by a Graydwarf Shaman
4. You're standing near a wild beehive.
5. If you're at someone's server, and you're alone at your base, near a campfire, and keep getting poisoned, I'd say someone is fooling around with console commands/hacks/mods.