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'''Status ailments''' affect a [[Pokémon]]'s ability to battle. There are three kinds of status.  The first are non-volatile, the second are volatile, and the third lasts while a Pokémon is in battle.

=Non-volatile status=
Moves which are non-volatile will remain until a Pokémon is healed at a Pokémon Center, or a specific [[status ailment healing item|curative item]] is used, or some status have the ability to wear off on their own.  A Pokémon inflicted with a non-volatile status will still be affected after being pulled out of battle (unless they have the {{A|Natural Cure}} ability), and after a battle is over.  A Pokémon can only be inflicted with one of these status at a time. In [[Generation III]] and beyond, certain abilities will prevent these statuses from taking place, while others will cause them.

==Burn==
Burn reduces a Pokémon's physical attack by half.  Additionally, at the end of a turn, the Pokémon loses 1/8 its maximum hit points (in [[Generation I]], the Pokémon loses 1/16th of its maximum hit points).  {{t|Fire}}-type Pokémon, and Pokémon with the [[Water Veil]] Ability cannot be burned by Fire-type moves, but the former can be burned by {{m|Tri Attack}}.  All [[List_of_moves_that_burn|moves which can cause burn]] are Fire-type except Tri Attack.

==Freeze==
A frozen Pokémon is unable to attack with most moves.  Most Fire-type moves used on a frozen Pokémon will remove the frozen status.  As of [[Generation II]], freeze has a random, ~10% chance to be cured on its own on the frozen Pokémon's turn. Contrary to popular belief, {{m|Sunny Day}} weather does '''not''' cause a quicker thawing.  {{t|Ice}}-type Pokémon cannot be frozen by Ice-type moves except in [[Generation I]]; however, they can be frozen by Tri Attack (again, except in Generation I). A frozen Pokémon can still use the moves {{m|Flame Wheel}} and {{m|Sacred Fire}}; when used while frozen, these moves will thaw the user, thaw the opponent if possible, and deal damage to the opponent.  All [[List_of_moves_that_freeze|moves which cause freezing]] are Ice-type except Tri Attack.

==Paralysis==
A Pokémon inflicted with paralysis will be unable to attack ("fully paralyzed") a quarter of the time.  Additionally, its speed is reduced to 25% of its previous value.  Many [[List of moves that paralyze|moves that cause paralysis]] are of the {{t|Electric}} type.

==Poison==
A poisoned Pokémon loses 1/8 of its maximum hit points every turn (in [[Generation I]], it loses 1/16th).  {{t|Poison}}-type Pokémon cannot be poisoned.  {{t|Steel}}-type Pokémon cannot be poisoned in [[Generation III]] (in [[Generation II]], {{t|Poison}}-type attacks can't affect {{t|Steel}}-types, but can otherwise be poisoned, by {{M|Twineedle}}). A poisoned Pokémon also loses 1 hit point for every four steps taken while not in battle.  In [[Generation IV]], a Pokémon whose HP is reduced to 1 via poison outside of battle will have the poison status removed. All [[List_of_moves_that_poison|moves that can poison]] are of the Poison-type except Twineedle and {{m|Secret Power}}.

===Badly poisoned===
The status ailment caused by {{m|Toxic}} and {{m|Poison Fang}} is the same as Poison except its damage begins at 1/16 and grows an additional 1/16 every turn, taking 2/16 max hit points the second turn, then 3/16 the third turn, and 4/16 the fourth, and so on. In [[Generation I]] and [[Generation II]], switching a Pokémon out of active battle would change badly poisoned to normal poison. As for [[Generation III]], the "badly poisoned" effect will remain even after switching a Pokémon out of battle and back in. After a battle is over, the "badly poisoned" status will become a normal poison.  All [[List_of_moves_that_poison|moves which can badly poison]] are of the Poison-type.

==Sleep==

A Pokémon that is asleep is unable to use any attacks (in a situation almost identical to the Freeze condition), except for two special moves which may be used while asleep ({{m|Snore}} and {{m|Sleep Talk}}).  Sleep lasts for a randomly chosen duration of 1 to 7 turns (1 to 3 in Stadium). Sleep may be self-induced for 3 turns (inclusive of the initial turn) using the move {{m|Rest}}.  No [[List_of_moves_that_cause_sleep|moves that cause sleep]] cause damage as well.

=Volatile status=
A volatile status will wear off when a Pokémon is taken out of battle or a battle is over.  Many of these status will also wear off after a number of turns pass.  All of these conditions may be passed to another Pokémon by using {{m|Baton Pass}} unless stated otherwise.

==Attract==
An attracted Pokémon cannot attack 50% of the time.  A Pokémon can only successfully use {{m|Attract}} on opponents of the opposite gender; unknown-gender Pokémon are both immune to this condition and unable to inflict it on others. Pokémon with the {{A|Oblivious}} ability are also immune to this.  Attract status cannot be passed with Baton Pass.

==Confusion==
A Pokémon will hurt itself in its confusion 50% of the time.  Confusion wears off after 1&#8211;4 attacking turns.  This means that turns recharging, such as after using {{m|Hyper Beam}}, and turns unable to attack, such as from paralysis, will not lower the remaining number of turns of confusion. However, a sleeping Pokémon may hurt itself in confusion if using a move such as {{m|Snore}} or {{m|Sleep Talk}}. Multi-turn attacks such as {{m|Fly}} and {{m|Dive}} require that confusion be checked both turns, further reducing the chance of successful attack. Pokémon with the {{A|Own Tempo}} ability are also immune to [[List_of_moves_that_confuse|moves that cause confusion]].

==Curse==
If a {{t|Ghost}}-type Pokémon uses {{m|Curse}}, then the opponent loses 1/4 its maximum hit points every turn.

==Flinch==
Flinch prevents a Pokémon from attacking.  A Pokémon can only be flinched if the opponent attacks first. Pokémon with the {{A|Inner Focus}} ability are also immune to this.  Most [[List_of_moves_that_flinch|moves that cause flinching]] are physical attacks.

This is known as cringing in [[Pokémon Mystery Dungeon]].

==Foresight/Odor Sleuth==
The opponent's evasion modification will not affect the accuracy of a Pokémon that uses {{m|Foresight}} or {{m|Odor Sleuth}}. In addition, a {{T|Normal}}- or {{T|Fighting}}-type move used by such a Pokémon will affect {{T|Ghost}}-type Pokémon.

==Leech Seed==
Each turn, a Pokémon hit by {{m|Leech Seed}} loses 1/8th (1/16th in [[Generation I]]) of its maximum hit points.  The opponent is healed by the same amount. {{T|Grass}}-type Pokémon are immune to {{m|Leech Seed}}.

==Mind Reader/Lock-On==
When a Pokémon uses {{m|Mind Reader}} or {{m|Lock-On}}, the next damage-dealing move will hit the opponent without fail.

==Nightmare==
{{m|Nightmare}} only affects a sleeping Pokémon.  The sleeping Pokémon loses 1/4th of its maximum hit points every turn.  If the sleeping Pokémon awakens, then the nightmare will no longer be in effect.  If Baton Pass switched out a non-sleeping Pokémon, then the nightmare will no longer be in effect.

==Perish Song==
After three turns, all Pokémon who heard the {{m|Perish Song}} will faint. Note that this excludes Pokémon with the {{A|Soundproof}} ability.

=Non-volatile battle status=

==Defense Curl==
Using {{m|Defense Curl}} causes the power of {{m|Rollout}} to double for the Pokémon.

==Focus Energy==
When a Pokémon uses {{m|Focus Energy}}, its critical hit rate increases.

==Mean Look/Spider Web==
A Pokémon trapped by {{m|Mean Look}} or {{m|Spider Web}} cannot switch until the Pokémon that used the move is defeated or switches.  If a trapped Pokémon uses Baton Pass, the Pokémon brought out will still be trapped.

==Minimize==
A Pokémon having used {{m|Minimize}} will take double damage if hit by the move {{m|Stomp}} (though this behavior is not present in [[Generation I]]).

==Mist==
{{m|Mist}} prevents a Pokémon's stats from being lowered by the opponent's attacks.  This Pokémon may still lower its own stats with moves having such an effect.

==Substitute==

The Pokémon that uses {{m|Substitute}} loses 1/4th of its total HP (rounded down) to make a Substitute which will absorb hits until it "breaks" (damage the Substitute has taken is greater than the HP used to make it).  From [[Generation II]] onward, Substitutes block all status ailments and will immediately break if a OHKO attack connects with them.  In [[Generation I]], however, a substitute only blocks primary status ailments; attacks like {{m|Thunder Wave}} and {{m|Spore}} completely circumvent the Substitute.

[[Category:Game mechanics]]
[[Category:Terminology]]