Prosopometamorphopsia

Prosopometamorphopsia is a rare neurological condition, sometimes informally called demon face syndrome, in which a person perceives other people's faces as distorted, for example drooping, swelling, discolored or with their features shifted out of place, even though the sufferer's underlying ability to recognize whose face it is remains intact. This distinguishes it sharply from prosopagnosia, in which faces look normal but cannot be recognized. Only around seventy five to eighty cases have been documented since 1904; in roughly half the distortion affects the whole face, while in the other half it affects only one side, a variant called hemi-prosopometamorphopsia. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/