This is truly a terrible affliction on humanity, those who fall in the Ellis category of mental state often show prominent signs of rapid brain matter deterioration, resulting in a decreased overall intelligence. Ellis's are kept in dark, damp rooms and fed high protein Tofu meals to slow the deterioration of the brain. Strong light can cause the subject to completely "flip out", often resulting in a rampage of idiocy in the immediate vicinity.
There is no cure for the Ellis affliction, however you can rest safe in the knowledge that you must be born with this disease; it cannot be passed on, even through blood transfer. This is an extremely rare disease, with just one serious case known to exist to this day.
Two definitions apply to the same spelling (and same prononciation)
Elli Norse Goddess of Old age
Elli, from the word "Elohim" a title for God in Aramaic (speaking of "God on High" or "Highest God")
2: Elli Fought Thor