Persistence of headache and its relation to other major sequelae following traumatic brain injury at 2-8 years after deployment-related traumatic brain injury in veterans of Afghanistan and Iraq wars.

For veterans experiencing a DTBI, these TBI-related sequelae persist with little improvement over time up to 8 years. A trend toward symptoms becoming worse as DTBI severity increased was observed. Headache was the most frequent sequela of TBI, occurring in 96% of the patients with almost half of these reporting severe/very severe intensity of headache burden. The basis for the prolonged persistence of these STBI is not known.