Concussion was a form of brain injury.
Uric the Oddball suffered from a concussion lasting ten days after walking against a wall, believing that he had become a ghost. This happened after he heard his pet Augureys crying, which was believed to be fatal at that time.
This event was covered in Uric's Biography, written by Radolphus Pittiman.
- Fantastic Beasts and Where to Find Them (Mentioned only)