Part of the "What is...?" series
We commonly associate whiplash injuries with car accidents or collisions, but whiplash can occur any time your head moves suddenly, such as a fall where the head is jolted backwards, or as an sporting injury in a contact sport like rugby.
Unlike more serious injuries, like a fracture, the pain of whiplash may not develop for a day or two after the initial injury. But the pain that develops from it can be debilitating, because it often causes severe stiffness, spasms, neck pain and headaches.