Coma

 reduces afflicted target's HP to 1 and SP to 0. When used against monsters, amount of EXP that equals the damage you dealt during this period is not given when monster dies.

Abilities
The following abilities inflict :
 * Bull's Eye
 * Illusion - Death

Cure
can be cured through the following methods:
 * Heal, Healing Items
 * One of Battle Chant's random effects grants 60 seconds of immunity to all status effects to party members, including.

Prevention
The following lists ways that can be prevented:
 * You can dodge inducing physical attacks if you have high FLEE.
 * Having higher LUK will decrease the chance of when attacked.
 * Inversely, having higher LUK will increase the chances for infliction when attacking.