Most people know to apply ice to an acute injury but aren't so sure when to use heat. There are two basic types of injuries: acute and chronic.
Acute Injuries are sudden, sharp, traumatic injuries that occur immediately (or within hours) and cause pain (possibly severe pain). Most often acute injuries result from some sort of impact or trauma such as a fall, sprain, or collision and it's pretty obvious what caused the injury.
Acute injuries also cause common signs and symptoms of injury such as
