Status Ailments

Permanent Status Ailments stay with you even after the battle ends.

Silence

Cannot cast spells.
It is cured by an EchoHerb or Esuna.

Poison

HP goes down with every battle turn and every step taken.
It is cured with an Antidote or Esuna.

Blind

Regular attacks miss frequently.
It is cured with an EyeDrop or Esuna.

Minimum

Attack and defense go way down.
It is cured with a Lucky Mallet, or with Minimum or Esuna.

Frog

Attack and defense go way down and cannot cast spells.
It is cured with a MaidensKiss, or with Toad or Esuna.

Piggy

Speed goes way down; cannot cast any spells but "Piggy".
It is cured with DietFood, or with Piggy or Esuna.

Cursed

Attack goes way down.
It is cured with a Cross or Esuna.

Stone

Cannot move or attack; if all characters are stoned/wounded, game ends.
It is cured with a Gold-Pin or Esuna.

Wounded

Dead; if all characters are stoned/wounded, game ends.
It is cured with a Phoenix down, or with Life or Life 2.

Temporary Status Ailments end with the battle.

Confuse

Attacks and uses spells at foes and allies at random.
It is cured with with a physical attack.

HP-Down

HP goes down even though you're not poisoned.
Cannot be cured.

Sleep

Cannot move or do anything.
Lasts a limited time.

Slow

Takes longer to be ready to attack.
Cannot be cured.

Paralyze

Cannot move or do anything.
Lasts a limited time.

Stop

Cannot move or do anything.
Lasts a limited time.

Slow Petrify

Body slowly turns to stone. You become stone if you wait too long.
It is cured with a Gold-Pin or Esuna.

Beserk

Stats go up by about 10%, but you can't be controlled.
Can't be cured.

Death Sentence

A timer appears. When it hits 0, your character is Wounded.
Cannot be cured.

These status "ailments" are helpful. They are all temporary with the exception of Levitate (which ends when you go up/down a floor in a cave). The spell "Dispel" rids you of beneficial status ailments.

Levitate

You aren't damaged by Quake Spells or damaging floors (ie Sylph Cave, Cave to the Phantom World).
Caused by the "Levitate" white spell.

Haste

It takes less time to get ready to attack.
Caused by the "Haste" white spell, or a Hermes.

Protect

Lessens physical attack damage.
Caused by the "Protect" white spell.

Shell

Lessens magical attack damage.
Caused by the "Shell" white spell.

Reflect

Most spells (including Cure spells) cast on you are reflected onto the enemy. A single spell cannot be reflected twice.
Caused by the "Reflect" white spell, or a Light Curtain or Moon Curtain.

Blink

Let's you completely avoid physical attacks. Usually lasts 2-3 hits.
Caused by the "Blink" white spell, "Image" ninja spell, or a Scape.