Power syndrome

 was a biological imbalance in the chemical makeup of an individual that granted the sufferer almost super-human like abilities. When coupled with Force-sensitivity however, it lead to the creation of seemingly invincible sufferers, who were capable of near impossible feats.

The exact origins of the disease are unknown, but many believed it to be an ancient weapon created by the Sith for their war against the Old Republic. But had several side-effects.

This included key flaws in the sufferers psyche and physical strengths, leading to often life-endangering weaknesses. One such example would be Darth Raith's overconfidence, which has nearly claimed his life multiple times.

It had many sufferers amongst the Sith of the Sith Order of Decreto, and their enemies.

Known sufferers

 * Darth Abeonis
 * Darth Hiljo
 * Darth Raith
 * Jehn Rhin
 * Darth Nihilus
 * Darth Wyyrlok

Behind the scenes
was created by Jasca Ducato when he came to the sudden realization that many of his Sith were being described as having "&hellip;unparalleled knowledge of the rituals and lore of the Sith [&hellip;] and abilities in the dark side unsurpassed."[ src ]

Knowing this, and needing to find a plausible explanation for the superiority of his creations, Jasca created. Thus providing a sutible explanation for his characters seemingly unparalleled strengths.