Can a lumbar puncture identify the cause of an unexplained headache?

In general, a lumbar puncture can help identify the cause of headaches with unknown origin. The detailed analysis is as follows:

A lumbar puncture involves inserting a thin, long needle into the lumbar region to collect cerebrospinal fluid (CSF). CSF is the liquid that surrounds the brain and spinal cord. By performing a lumbar puncture, a sample of CSF can be obtained for examination. This procedure helps diagnose CSF infections, evaluate CSF pressure, and detect chemical substances in the CSF. Headaches of unknown origin refer to headaches whose causes cannot be determined through routine imaging studies or physical examinations. A lumbar puncture can help rule out serious conditions causing subacute headaches, such as intracranial infections, cerebral hemorrhage, and meningitis. Subarachnoid hemorrhage, a severe condition caused by rupture of an intracranial artery, may lead to intense headaches. Through a lumbar puncture, red blood cells in the CSF can be detected to determine whether subarachnoid hemorrhage is present. Therefore, a lumbar puncture can help identify the cause of headaches with unknown origin.

If you plan to undergo a lumbar puncture, it is recommended to go to a正规 hospital to avoid affecting the test results.