The story
From prosopo- + metamorphopsia. The term was first used in 1953 by British neurologist MacDonald Critchley.
Etymology from Wiktionary, CC BY-SA 4.0.
prosopometamorphopsia
Today it means: A rare neurovisual perceptual disorder characterized by distorted perception of human faces, in which facial features may appear altered in size, shape, position, or configuration despite intact visual input. It is typically associated with dysfunction in cortical regions involved in face processing, particularly in the occipitotemporal visual pathway. Full definition →