Many individuals accused of witchcraft were actually suffering from "melancholy" or other psychological delusions. Demonic Illusions:
The primary English translation of Johann Weyer's 1563 work, De Praestigiis Daemonum , is titled Witches, Devils, and Doctors in the Renaissance de praestigiis daemonum english translation pdf
Instantly find mentions of specific demons or medical terms like "melancholia." De Praestigiis Daemonum