What's the difference between a concussion and basiclar skull fracture. also does a drip always in back of throat normal with concussion?

Concussion v BSFx: A concussion happens when the brain is rocked(shook) in the cranial cavity. A basilar skull fracture is when the bones at the base of skull actually get fractured. People will have a bruise behind the ear or bruising around both eyes. The drip at the back of the nose could be a Cerebral Spinal fluid leak if it is salty constant and associated with headaches. Check with your doctor.