Alice in Wonderland syndrome.
The Alice in Wonderland syndrome (AIWS), denotes a variety of self-experienced paroxysmal body image disturbances affecting the experience of the size, mass, shape of the body or its position in space (obligatory core symptoms of the AIWS, e.g. macro- and microsomatognosia, out-of-body experiences) which may co-occur with depersonalization, derealization, visual illusions and disorders of the time perception (facultative symptoms of the AIWS).
I had AIWS as an adolescent. It’s a type of migraine aura. I didn’t know it had such a cool name!