Its not immediately clear what the headache could be
It seems that some serious possibilities like a reoccurrence of tumor, bleeding or buildup of brain pressure (hydrocephalus) have been ruled out by the tests you have had
If the pain is worse on standing rather than lying down is would be suggestive of a low CSF pressure headache (low volume of fluid bathing the brain). Sometimes this can be from a small tear in the dura (or covering of the brain/spinal cord). However it seems to have started before your spinal tap, and there does not seem to be another reason for a tear, but they can occur spontaneously - did they measure the spinal fluid pressure during the spinal tap?, often it is not done, but it provides a lot of information.
If it is a low pressure headache, tests (such as nuclear medicine scans or a CT myelogram) can be done to find the leak and it can be plugged.
Duragesic and other opiaites are not good drugs to be on in the medium or long term. Have they tried a medrol dose pack (steroids) to break the headache? You may need to seea headache specialist if yo uhave not already. If you are in the area, the Cleveland Clinic Headache Center could help.
Good luck
What I believe you are experiencing is a low pressure headache with photophobia caused by CSF leakage during your lumbar puncture. You will find the headache is bearable when you lie flat but can become extreme when standing. I suffer from migraines and when I had a spinal tap, the headache began the following day and lasted 9 days!. A blood patch may help but the headache should resolve without the patch. Hope this helps..... Chris
well, unfortunately the headache started days before the spinal tap, and now he is experiencing fits of anger for no apparent reason. He has always been a very passive kind person, this is the first I have ever seen him be angry at anyone. I am at a loss as to whats wrong with him...