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 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 and after a battle is over. A Pokémon can only be inflicted with one of these status at a time.

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. Fire-type Pokémon cannot be burned by fire-type moves. They can be burned by Tri Attack.

Freeze

A frozen Pokémon is unable to attack. Most fire-type moves used on a frozen Pokémon will remove the frozen status. As of Gold/Silver versions, freeze thaw out on its own, and Sunny Day weather will cause a quicker thawing. Ice-type Pokémon cannot be burned by ice-type moves. They can be burned by Tri Attack.

Paralyze

A Pokémon inflicted with paralysis will be unable to attack a quarter of the time. Additionally, its speed is reduced to 25%.

Poison

A poisoned Pokémon loses 1/8 of its maximum hit points every turn. Poison-type Pokémon cannot be poisoned. Steel-type Pokémon cannot be poisoned by poison-type moves. They can be poisoned by Twinneedle.

Sleep

Toxic

Toxic is the same as Poison except its damage beings at 1/16 and grows 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. Previously, switching a Pokémon out of active battle would change toxic to a normal poison. As for FireRed/LeafGreen versions, the toxic effect will remain even after switching a Pokémon out of battle and back in. After a battle is over, the toxic will become a normal poison.

• Sleep

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 Baton Pass unless stated otherwise.

Attract

An attracted Pokémon cannot attack 50% of the time. A Pokémon can only be attracted by a Pokémon of the opposite gender. Pokémon with an unknown gender cannot be attracted and cannot attract other Pokémon. 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 1–4 attacking turns. This means that turns recharging, such as after using Hyper Beam, and turns unable to attack, such as from paralysis, will not lower the remaining number of turns of confusion.

Curse

If a ghost-type Pokémon uses 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.

Foresight

The opponent's evasion modification will not affect the user's accuracy.

Leech Seed

Each turn, the Pokémon loses 1/8 of its maximum hit points. The opponent is healed by the same amount.

Mind Reader

Lock-On

The next damage-dealing move will hit the opponent without fail.

Nightmare

Only affects a sleeping Pokémon. The sleeping Pokémon loses 1/4 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 Perish Song will faint.

Non-Volatile Battle Status

Defense Curl

Using Defense Curl causes the power of Rollout to double for the Pokémon.

Focus Energy

The Pokémon's critical hit rate increases.

Mean Look

Spider Web

A Pokémon trapped by Mean Look or 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 Minimize will take double damage if hit by the move Stomp.

Mist

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