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Lumbar puncture

A lumbar puncture is a medical procedure where a needle is inserted into the lower part of the spine.
Why a lumbar puncture may be used
A lumbar puncture is most often used to diagnose certain conditions that affect the brain and spinal cord.
How it is performed
Many lumbar punctures are carried out after being admitted to hospital in an emergency.
Side effects of a lumbar puncture
Although lumbar punctures are generally safe procedures, they can sometimes cause unwanted side effects.