I60.50

Clinical Causes: Rupture of a weakened blood vessel (cerebral aneurysm) in the vertebral artery Vessel malformations such as arteriovenous malformations High blood pressure damaging blood vessel walls over time Degenerative changes in the blood vessel walls Infections or inflammation affecting the arterial walls Certain genetic conditions that weaken blood vessels Use of blood-thinning medications leading to increased bleeding risk

Key Symptoms: Sudden, severe headache often described as the worst headache experienced Neck stiffness and pain Nausea and vomiting Sensitivity to light (photophobia) Blurred or double vision Loss of consciousness or fainting episodes Seizures Sharp or localized neurological deficits, such as weakness or numbness on one side Confusion or difficulty understanding speech

Diagnosis Path: Diagnosing a nontraumatic SAH involves a combination of clinical assessment and imaging studies. A healthcare provider typically performs a neurological examination to evaluate mental status, reflexes, and motor skills. To confirm the presence of bleeding and identify its source, the following tests are commonly used: - Computed Tomography (CT) scan: An initial imaging test that can quickly detect blood in the brain. - Lumbar puncture (spinal tap): Performed if the CT scan is inconclusive, to look for blood in the cerebrospinal fluid. - Cerebral angiography: An imaging technique that visualizes blood vessels to identify aneurysms or malformations. Laboratory tests may also be performed to assess overall health and identify underlying causes.

Treatment Protocols: Relief and management of a nontraumatic subarachnoid hemorrhage depend on the severity and underlying cause. Typically, treatment involves: - Emergency care to stabilize vital signs and prevent complications. - Medications to control blood pressure and reduce the risk of rebleeding. - Surgical interventions such as clipping or endovascular coiling to secure aneurysms. - Management of brain swelling or hydrocephalus if present. - Supportive care including pain management, neurological monitoring, and rehabilitation services. Follow-up care focuses on preventing recurrent bleeding and addressing any neurological deficits. Managing risk factors like hypertension is crucial in reducing future stroke risk.