Does con damage when - = auto death?

[Voadam]

How exactly does con damage work when you are at -hit points from wounds? If you are more than 10th level does it automatically kill you?

I went negative and then one of the fleeing undead spellcasters threw down a cloudkill to cover his escape. even on a succesful save you take con damage.

 

[CRGreathouse]

How exactly does con damage work when you are at -hit points from wounds? If you are more than 10th level does it automatically kill you?

I went negative and then one of the fleeing undead spellcasters threw down a cloudkill to cover his escape. even on a succesful save you take con damage.

If a 10th level character with, say, 14 Con is at -1 hp and loses 2 points of Con, he loses 10 hit points and dies. Generally, you lose 1 hp/level whenever your Con drops by 2 (or 1, if it's even).

You can't go below 1 hp/HD, though. from Con damage or drain *before* wounds are considered. A Con 8 Wiz10 who is at 18 hit points (down from 25 normally) who loses 7 points of Con would lose 40 hp, but instead his hit points drop to 10 (1 hp/HD) less damage he's taken, so he's at 3 hp.

Does that help?