Dr. Taka, I'm Asking About My Husband Once Again. Lately
Post concussion syndrome may last for many months.
Detailed Answer:
Hello again! I am sorry I wasn't able to answer your question a little earlier.
Headache and other symptoms after head trauma can persist for a long time, many months even. That is because often apart from the initial structural damage there are also psychological factors which come into play perpetuating the symptoms. Of course it shouldn't automatically be attributed to the trauma, if he had a period of improvement then some tests should be conducted for other causes. CT scan seems to have been done, some blood tests are necessary as well. Perhaps they were done already but if not I would advise routine blood tests to screen for infections, inflammation and metabolic alterations.
If all the tests turn out normal then I am afraid that it is likely due to the head injury as discussed. In that case if symptoms persist for over 6 months then perhaps preventive medication should be tried, most common ones include antidepressants.
Let me know if you have further questions.