A new study has show that of the 15% to 25% of the mildly brain injured veterans returning from both Iraq and Afghanistan, nearly 98% are reported experiencing post traumatic headaches. These headaches are reported to occur roughly 8 days a month and last on average about 4 hours. Studies show these headaches usually begin within a week of suffering brain trauma. For information on attorneys litigating brain injuries in the Chicagoland area, please click here. To read more about this brain injury study, click here.