I72.6

Clinical Causes: Atherosclerosis (hardening of the arteries) leading to weakening of the vessel wall Trauma or injury to the neck or head area Genetic predispositions, such as connective tissue disorders (e.g., Ehlers-Danlos syndrome, Marfan syndrome) High blood pressure (hypertension) damaging arterial walls Infections causing inflammation of the vessel wall (vasculitis) Degenerative changes associated with aging Previous neck surgeries or interventions

Key Symptoms: Often asymptomatic in early stages Headaches, especially in the back of the head Neck pain or stiffness Dizziness or vertigo Visual disturbances, such as double vision or blurred vision Difficulty swallowing or hoarseness if the aneurysm compresses nearby nerves Signs of cerebral ischemia or stroke if blood flow is compromised In cases of rupture, sudden severe headache, loss of consciousness, or neurological deficits

Diagnosis Path: Diagnosing a vertebral artery aneurysm typically involves imaging studies and clinical evaluation: - **Magnetic Resonance Imaging (MRI)**: Provides detailed images of blood vessels and brain structures. - **Magnetic Resonance Angiography (MRA)**: Non-invasive imaging specifically focused on blood vessels. - **Computed Tomography Angiography (CTA)**: Uses CT scans combined with contrast dye to visualize arteries. - **Digital Subtraction Angiography (DSA)**: An invasive but highly detailed procedure performed in specialized settings to examine blood flow and detailed aneurysm morphology. - Physical examination may reveal neurological signs related to nerve compression or ischemic events.

Treatment Protocols: Management of a vertebral artery aneurysm depends on its size, location, and risk factors: - **Observation**: Small, asymptomatic aneurysms may be monitored regularly with imaging. - **Endovascular procedures**: Minimally invasive techniques such as coiling or stent placement to reinforce the vessel wall and prevent rupture. - **Surgical intervention**: Clipping or repairing the aneurysm surgically may be necessary in certain cases, especially if the aneurysm is large or causing symptoms. - **Medical therapy**: Control of blood pressure, cholesterol levels, and other vascular risk factors to prevent growth or rupture. - **Lifestyle modifications**: Avoiding smoking, managing stress, and maintaining a healthy diet. A multidisciplinary team, including neurologists, neurosurgeons, and radiologists, collaborates to determine the most appropriate treatment plan.