How is pseudotumor cerebri diagnosed?
Pseudotumor cerebri is diagnosed by brain scanning (MRI or CAT scans) showing abnormalities together with elevated spinal fluid pressure noted by the doctor during the lumbar puncture. A spinal tap, or withdrawal of cerebrospinal fluid using a thin needle, will reveal increased intracranial pressure. If enough fluid is removed, the headache will often be relieved, further confirming the diagnosis.
