G96.81

Clinical Causes: Spontaneous CSF leaks, often due to weakness in the dura mater (the outer membrane of the spinal cord and brain). Trauma or injury to the head or spine that damages the dura. Complications from medical procedures such as lumbar punctures or spinal surgeries. Certain connective tissue disorders that weaken the dura, making leakages more likely.

Key Symptoms: Postural headache that worsens when upright and improves when lying down. Neck stiffness and pain. Nausea and sometimes vomiting. Tinnitus or ringing in the ears. Sensitivity to light (photophobia). Dizziness or light-headedness, especially when sitting or standing. Potential cognitive disturbances like difficulty concentrating. In severe cases, neurological deficits if brain sagging causes pressure on nerves or brain tissue.

Diagnosis Path: Diagnosing intracranial hypotension involves a combination of medical history, physical examination, and imaging studies. Key diagnostic procedures include: - Magnetic resonance imaging (MRI), which may show brain sagging, diffuse meningeal enhancement, or other signs indicative of low CSF volume. - Radioisotope or dye-based myelography to identify CSF leaks. - Assessing symptoms and ruling out other causes of headache or neurological issues.

Treatment Protocols: Treatment approaches aim to restore normal CSF volume and pressure, alleviating symptoms. Common strategies include: - Bed rest and activity modification to minimize CSF leakage. - Adequate hydration to support CSF production. - Caffeine intake, which can constrict blood vessels and help increase CSF pressure. - Epidural blood patches, where a patient's own blood is injected near the site of a leak to promote clotting and seal the leak. - Surgical intervention in persistent cases where leaks cannot be sealed through less invasive methods. - Pain management and supportive care tailored to individual needs. Monitoring and follow-up are essential to assess response and prevent recurrence.