Type: Astral Malady
Save: On any visit to the Astral, a psychic, or arcane spellcaster has a 1% chance of falling victim to astral psychosis, with a divine spellcaster having a 1% chance every other visit. If this disorder does manifest itself, the victim has a single Will save vs. DC 10 to avoid the effects.
Onset: Immediate
Frequency: N/A
Effect: If the victim has succumbed to the psychosis he becoming homicidal, schizophrenic, and paranoid.
Cure: If it manifests, this disorder can be cured only through magical means of restoring ones sanity, such as a restoration spell or psychic surgery.

Astral psychosis is a quite hazardous syndrome that can affect spellcasters doing nothing more than visiting the Astral Plane. This disorder seems to affect psychics more often than wizards and wizards more often than priests, though the exact reason for this is as of yet unknown.