Status changes can occur both in and out of battle, and can affect both your party members and enemies. A few disappear after battle or after a set period of time, but most carry over their effects to the next fight unless you remedy them. (Tip: you can junction 100 Sleep, 100 death, 100 blind, 100 silence, 100 confuse, or 100 stop on Squall's status attack, so next time, when he lets the Gunblade rip, the enemies are afflicted almost every time!)
DISABLED (KO'ed) Effect Character lies on the ground, unable to take any further part in battle Remedy Life-typed magic, Phoenix-typed items, Revive command ability, spending the night at a Hotel (note: disabled characters at the end of a fight gain zero EXP and AP)
DOOM Effect Character dies after red timer above his or her head expires Remedy Elixir-typed items, Remedy Plus, Treatment (Chiryou) command ability
CRITICAL Effect Character falls to his or her knees, HP value turns yellow and rate of Specials being made available increases Remedy Cure-typed magic and items, White Wind E. Skill
POISON Effect Green bubbles appear over a character; he or she takes a small amount of damage for every turn in battle Remedy Esuna magic, Antidote, Remedy-typed items, Elixir-typed items, Treatment command ability
PETRIFY Effect Character becomes cast in stone, unable to take any further part in battle Remedy Esuna magic, Soft (Gold Needle), Remedy-typed items, Elixir -typed items, Treatment command ability (note: petrified characters at the end of a fight gain zero EXP and AP)
PETRIFYING Effect Character becomes cast in stone after white timer above his or her head expires Remedy Esuna magic, Soft (Gold Needle), Remedy-typed items, Elixir -typed items, Treatment command ability
DARKNESS Effect A cloud of smoke covers the character's eyes; Hit parameter is halved Remedy Esuna magic, Eye Drops, Remedy-typed items, Elixir-typed items, Treatment command ability
SILENCE Effect A "...." bubble appears over the character's head; Magic, Draw and G.F. command abilities are sealed off Remedy Esuna magic, Echo Screen, Remedy-typed items, Elixir-typed items, Treatment command ability
BERSERK Effect Character turns fuming-red; Attack power is raised, but character automatically attacks for every turn Remedy Esuna magic, Remedy-typed items, Elixir-typed items, Treatment command ability
ZOMBIE Effect Character takes on a greyish-green shade of colour; Attack power is raised, but character is now susceptible to Heal -typed spells and items; a single Phoenix Down instantly kills the affected character. Using Drain magic or an Absorb command ability on a zombified character results in damage to the caster instead Remedy Esuna magic, Holy Water, Remedy-typed items, Elixir-typed items, Treatment command ability
SLEEP Effect A "Zzzz" sign appears over the character's head; unable to enter any command abilities Remedy Physical attacks, Esuna magic, Remedy-typed items, Elixir -typed items, Treatment command ability
CONFUSE Effect Character spins around in circles; attacks both ally and enemy randomly Remedy Physical attacks, Esuna magic, Remedy-typed items, Elixir -typed items, Treatment command ability
VITALITY ZERO Effect Character takes on a shade of purple and Vitality parameter drops to zero; caused only by Meltdown (Merton) spell Remedy Esuna magic, Remedy Plus, Elixir-typed items, Treatment command ability
SLOW Effect Character's Active Time Bar turns blue and fills slower Remedy Dispell magic, Haste magic, Esuna magic, Elixir-typed items, Treatment command ability
STOP Effect Character's Active Time Bar stops filling; unable to act Remedy Dispell magic, Haste magic, Esuna magic, Elixir-typed items, Treatment command ability
HASTE Effect Character's Active Time Bar turns red and fills faster Remedy Dispell magic
REGEN Effect Character gradually recovers HP during the course of the fight Remedy Dispell magic
FLOAT Effect Character floats in mid-air; invulnerable to all Earth-typed attacks Remedy Dispell magic
PROTECT Effect A blue shield parries any physical attack on the character, reducing damage taken by half Remedy Dispell magic
SHELL Effect A purple shield parries any magical attack on the character, reducing damage taken by half Remedy Dispell magic
REFLECT Effect A yellowish-green shield reflects most magical spells cast on the character back to the caster; useless for some of the more powerful spells such as Meteor, Ultima and G.Fs Remedy Dispell magic
CURSE Effect Character falls to his or her knees and takes on a shade of black; unable to use Limit Breaks Remedy Esuna magic, Holy Water, Remedy-typed items, Elixir-typed items, Treatment command ability
AURA Effect Character takes on a shade of gold; rate of Limit Breaks being made available increases Remedy Dispell magic
DEFEND Effect Character assumes a defensive stance; invulnerable to all physical attacks and reduces all magical attacks by half Remedy Disappears after one active turn
DOUBLE, TRIPLE Effect Character has the ability to cast 2 or 3 spells of the same type in a single turn Remedy Dispell magic
INVINCIBLE Effect Character becomes translucent; all physical and magical attacks are useless on him or her Remedy Don't be silly; you'd want this in the game bigtime =)