A Pokémon that is infatuated cannot attack 50% of the time, even against Pokémon other than the one it is infatuated with.
The confused condition causes a Pokémon to hurt itself in its confusion 50% of the time. The damage is done as if the Pokémon attacked itself with a 40-power typeless physical attack.
Sleep lasts for a randomly chosen duration of 1 to 3 turns in Pokémon Stadium and Generation V onwards.
The badly poisoned condition is caused by Toxic and Poison Fang, as well as by Toxic Spikes after it is used twice. It 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.
The poison condition (PSN) causes a Pokémon to lose 1/8 of its maximum hit points every turn (in Generation I, it loses 1/16). Normally Steel- and Poison-type Pokémon and Pokémon with the Immunity Ability cannot be poisoned; however, if a Pokémon is poisoned then has its type changed to Steel or Poison or its Ability changed to Immunity, the poison will remain. In addition, in Generation II, Steel-type Pokémon can be poisoned by Twineedle. A Pokémon with the Poison Heal Ability will gradually recover health instead when poisoned.
The paralysis condition (PAR) causes a Pokémon to be unable to attack ("fully paralyzed") a quarter of the time. Additionally, its Speed is reduced to 25% of its previous value (except for Pokémon with the Quick Feet Ability, where this condition raises the Speed by 50%). Many moves that cause paralysis are of the Electric type. Ground-type Pokémon can be paralyzed, but not by Electric-type moves or by the Battle Arcade. In Generation V, Pokémon glow yellow when afflicted with paralysis and their animation will be slowed significantly. As of Generation VI, Electric-type Pokémon can no longer be paralyzed.
The freeze condition (FRZ) causes a Pokémon to be unable to make a move. Damaging Fire-type moves used on a frozen Pokémon will remove the freeze status. From Generation II onward, freeze has a random, 20% chance to be cured on its own on the frozen Pokémon's turn. Consequently, the frozen Pokémon may thaw out on the turn of freezing; however, in Generation I, a frozen Pokémon never thaws without external aid. Pokémon cannot be frozen in sunny weather; contrary to popular belief, sunny weather does not cause a quicker thawing.
The burn condition (BRN) halves damage dealt by a Pokémon's physical moves (except for Pokémon with the Guts Ability, where this condition raises Attack by 50%). Additionally, at the end of a turn, the Pokémon loses 1/8 its maximum hit points (in Generation I or in the case of Pokémon with the Ability Heatproof, the Pokémon loses 1/16 of its maximum hit points). Normally Fire-type Pokémon and Pokémon with the Water Veil Ability cannot be burned; however, if a Pokémon is burned then has its type changed to Fire or its Ability changed to Water Veil, the burn will remain. All moves which can cause burn are Fire-type except for Tri Attack (Generation II onwards), Fling when the Flame Orb is held, Scald and Ice Burn. In Generation V, Pokémon glow red when afflicted with burn.