![]() Although epidural anesthetic is injected just outside the membrane that surrounds the spinal cord, a spinal headache is possible if the membrane is unintentionally punctured. Sometimes epidural anesthesia may lead to a spinal headache as well. When an area of the skull is damaged, becomes thin, or cracks, the dura (the tissue that holds cerebrospinal fluid and surrounds the brain and spine) is exposed. Spinal headaches typically appear within 48 to 72 hours after a spinal tap or spinal anesthesia. This leakage decreases the pressure exerted by the spinal fluid on the brain and spinal cord, which leads to a headache. Spinal headaches are caused by leakage of spinal fluid through a puncture hole in the membrane (dura mater) that surrounds the spinal cord. Tell your health care provider if you develop a headache after a spinal tap or spinal anesthesia - especially if the headache gets worse when you sit up or stand. Spinal headaches are often accompanied by:
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