During a lumbar puncture, cerebrospinal fluid (CSF) is collected to help diagnose certain conditions such as multiple sclerosis or Alzheimer’s disease more accurately. We will, of course, provide you with detailed information about the procedure and possible risks in a personal informed-consent consultation.
Description of the examination
A CSF tap, also known as a lumbar puncture, is a procedure used to collect cerebrospinal fluid (CSF) from the spinal canal in the lower back (lumbar spine). A thin hollow needle is inserted between two lumbar vertebrae to obtain a small amount of CSF. This fluid can then be analyzed in the laboratory for various conditions, such as inflammation (e.g., in multiple sclerosis) or signs of neurodegenerative diseases like Alzheimer’s disease.
The procedure is usually performed under sterile conditions and can be done on an outpatient basis. You will either lie on your side on an examination couch or sit leaning forward so that the spine is optimally accessible. The puncture site is then disinfected and locally numbed before the fine needle is carefully inserted. The collected CSF usually flows on its own into special tubes.
When is this examination necessary?
A CSF tap is performed when there is suspicion of certain neurological diseases that can best be confirmed by analyzing the CSF. In addition to multiple sclerosis, this includes meningitis or other inflammatory processes in the central nervous system.
Lumbar puncture is also a valuable diagnostic tool when findings are unclear and symptoms include persistent headaches, dizziness, or memory problems. It can help differentiate between conditions and initiate targeted therapy.
Is this examination painful or uncomfortable?
Vielen Patienten und Patientinnen bereitet die Vorstellung einer Lumbalpunktion zunächst Unbehagen. Tatsächlich empfinden die meisten jedoch nur das kurze Stechen der Lokalanästhesie als leicht unangenehm. Beim Einführen der Punktionsnadel kann ein Druckgefühl auftreten, das in der Regel rasch nachlässt.
After the puncture, headaches may occur for a short time; however, these can often be relieved with bed rest and adequate fluid intake. Your care team will always ensure that you feel safe and will inform you in detail about every step of the process.