Inclusion Criteria:  Mild Traumatic Brain Injury (mTBI) Chronic headaches > 3 months after injury Aged 18-65 No prior TMS treatment Persistent Headaches with an intensity > 30 / 100 No history of daily headache prior to mTBI  Exclusion Criteria:  Pregnant Pacemaker or any metal in body that would prevent MRI History of dementia or major psychiatric disease, such as bipolar disorder or schizophrenia Presence of any other chronic neuropathic pain states History of seizure Pending litigation Can't understand English History of chronic headache like migraine prior to mTBI Evidence in chart of exacerbation of depressive/anxiety symptoms, active substance dependence, suicidal intent or attempt within previous month