Cerebral Parasite (GEP)

__TOC__
Although mostly exterminated on the Prime Material, some worlds still suffer cerebral parasite infestation of their Border. These tiny psionic parasites inhabit the Border Ethereal, living off psionic emanations from telepathic creatures on the adjoining planes. Unfortunately, psionic individuals have little chance of discovering their affliction until they attempt to draw upon their psionic strength and notice its diminishment.
If a psionically endowed creature on the adjoining plane comes to the attention of a cerebral parasite, it attaches itself to its new host and drains 1 PSP (Psionic Strength Point) each time its host uses any psionic ability, including psionic attacks and defenses. Once 6 PSPs are drained through repeated feedings, the parasite buds another parasite, which joins its parent in infesting the host. Unfortunately, a host has no way of directly realizing that he is infested. Furthermore, cerebral parasites cannot be psionically attacked from the Prime, though a cure disease exterminates a victim's particular infestation. 'Course, if a host goes ethereal (or ethereal travelers come across a parasite on the Border), these creatures are easily dispatched. (The Complete Psionics Handbook)
CEREBRAL PARASITE: AC N/A {JO}; MV N/A {6}; HD 1/2; hp 2 (average); THAC0 N/A; IIAT Nil; Dmg N/A; SA Psionic drain; SD Only affected by cure disease; SZ T (flea-sized); ML unsteady (5); Int Non (O); AL N; XP 35.