What are the consequences of developing basilar skull fracture?

Basilar skull fx: Basilar skull fracture results from a blow to the back of the head. This causes a concussion, which will usually resolve completely in several weeks. In severe cases it can cause spinal fluid leak, which needs to be surgically repaired. There a few cases which may have permanent loss of smell or vertigo. Over 90% of patients recover without long-term effects.