D&D 5E does not seem to have rules for ability score damage (that I could find), although it does mention that if CON is decreased, your maximum HP is reduced.

In addition, the Shadow monster in the Monster Manual has a Strength Drain attack that deals 1d4 Strength damage. The attack says that if a character's Strength reaches 0, the character dies.

Are there any general rules for ability damage in 5th Edition?


1 Answer 1


There are no general rules for ability damage, almost certainly because ability damage in 5e is incredibly rare.

With that said, there are some sources of ability damage, so it's worth taking a look at them. The following effects are the only sources of ability damage I can find:

  • The Intellect Devourer's Devour Intellect ability (MM 191), which can reduce a target's Intelligence to 0. If this happens, the target is stunned until it regains a point of Intelligence.
  • The Shadow's Strength Drain ability (MM 269), which reduces a target's Strength by 1d4. If their Strength score reaches 0, they die.

It's not much to reach a conclusion from, but it seems clear that the consequences of an ability score reaching 0 depends on what ability score it is. It may even depend on the effect that causes it; perhaps Intelligence reaching 0 from Devour Intellect is different to Intelligence reaching 0 from some dastardly Intelligence-reducing disease.

It's possible, but by no means guaranteed, that a mental ability score reaching 0 causes a creature to be stunned until it regains a point of that ability score, and a physical ability score reaching 0 causes a creature to die. Obviously, this is based on the 2 examples we currently have, so it's not exactly scientific.

With all of that said, if, in your game, someone's ability score reaches 0 for a reason other than these 2 effects, it must be an effect you've added. That being the case, it's up to you to decide what the consequences of this occurring would be.

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    \$\begingroup\$ +1. Given the overall design of monster abilities, I would bet that effects are per ability, for maximum design flexibility. \$\endgroup\$ Feb 26, 2015 at 18:32
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    \$\begingroup\$ @SevenSidedDie From the sound of it you are correct. It might be one of the things they intentionally left on the cutting room floor to be able to tailor the results of ability drain on each effect/spell/creature entry \$\endgroup\$ Aug 26, 2017 at 15:39
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    \$\begingroup\$ The Maurezhi Bite attack is relevant, and did not exist at the time of posting: "If the target is a humanoid, its Charisma score is reduced by 1d4...The target dies if this reduces its Charisma to 0. It rises 24 hours later as a ghoul, unless it has been revived or its corpse has been destroyed." \$\endgroup\$
    – Blits
    Jul 24, 2019 at 23:41

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