It would be very easy to look at all effects and determine if any player character is still under the influence of them in any way and if the result would damage the player then simply don't drop combat yet. This way you simply have to heal through or remove yourself from danger in order to be safe after a combat. Basically combat could still be a thrill and a challenge after the fact if you are very close to dying, even if there are no enemies left. After all in this game the environment is also often your enemy.
