Thanks for writing to us.
Raised intracranial tension is a common cause of headahe. This raised pressure in the head can be due to excessive CSF as a result of an infection of the brain and its surrounding tissue. Since they are suspecting an inflammation of the meninges
for which they did your spinal tap
, it is obvious that the momentary release of pressure inside head has relieved your symptoms.
I hope this information has been both informative and helpful for you.
Dr. Praveen Tayal