hi welcome to our site read your query that is a very significant question and i appreciate your problem i will try my best to answer your query i would have suggested you tell me exactly what the symptom is and not what you feel the diagnosis is tell me the character of pain not tension type headache and what trauma have you had to think of traumatic encephalopathy a long standing headache could simple be a migraine in fact photophobia you described is a feature of migraine and quickly rising and settling pain could be both cluster headaches and migraines i also think one should rule out space occupying lesions and therefore i suggest an mri of brain with contrast if needed i hope this helps you inform the reports mentioned above (if any) so i can be of help further best of luck (please do understand that some problem remains as online texting cuts down history and examination thereby reducing the effect and efficiency and increases reliance on tests) (If the answer has helped you, please indicate this) dr.saumyamittal@gmail.com