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The 23 pages that link to Lumbar puncture, each with the reason it gives.

• Cerebrospinal fluidRelated: It samples fluid from the spinal subarachnoid space for diagnosis.

• Spinal cordRelated: The needle enters below the adult cord's endpoint to reduce risk of direct injury.

• Guillain–Barré syndromeRelated: Testing may show elevated protein with few white blood cells, though early results can be normal.

• Intracranial pressureRelated: Opening pressure offers an indirect estimate in suitable patients, but the procedure is unsafe in some pressure states.

• MeningesRelated: The procedure passes between vertebrae to reach the fluid compartment bounded by the meninges.

• MeningitisRelated: Fluid obtained by this procedure is central to diagnosing many cases.

• HydrocephalusRelated: In selected cases, removing fluid can help assess or temporarily relieve normal pressure hydrocephalus.

• Spinal anesthesiaRelated: The needle approach resembles lumbar puncture, but the purpose is to create an anesthetic block.

• EncephalitisRelated: It provides fluid for tests that help identify infectious or immune causes.

• Acute lymphoblastic leukemiaRelated: It checks for leukemia in the central nervous system and can deliver preventive treatment.

• Subarachnoid hemorrhageRelated: It may help detect bleeding when imaging is negative but suspicion remains.

• Herpes simplex encephalitisRelated: It provides fluid for PCR and inflammatory testing, unless contraindications require delay.

• Bacterial meningitisRelated: Cerebrospinal fluid analysis is central to confirming bacterial meningitis and identifying its cause.

• Idiopathic intracranial hypertensionRelated: Opening pressure supports diagnosis when interpreted with the clinical and imaging findings.

• Neurological disorderRelated: Fluid analysis can help identify infections, inflammation, or other neurological disease.

• Febrile seizureRelated: It is considered when meningitis or another central nervous system infection is suspected.

• Neural spineRelated: The needle is guided between lumbar neural spines to avoid the spinal cord.

• NeurosyphilisRelated: It provides the sample used in many neurosyphilis evaluations.

• Anatomic landmarksRelated: The iliac crests help estimate the level for a safer needle approach.

• Empty sella syndromeRelated: In selected cases, it helps evaluate suspected raised intracranial pressure.

• Fluids and SecretionsRelated: Analysis of cerebrospinal fluid can help diagnose infections and neurological disorders.