srd
SRD
Ability Damaged: The character has temporarily lost 1 or more ability score points. Lost points return at a rate of 1 per day unless noted otherwise by the condition dealing the damage. A character with Strength 0 falls to the ground and is helpless. A character with Dexterity 0 is paralyzed. A character with Constitution 0 is dead. A character with Intelligence, Wisdom, or Charisma 0 is unconscious. Ability damage is different from penalties to ability scores, which go away when the conditions causing them go away.
Open Game Content from the System Reference Document 3.5, used under the Open Game License 1.0a.