Arteriovenous malformations (AVMs) are abnormal connections between arteries and veins, bypassing the capillary system. This can lead to increased blood flow and pressure in the affected area, potentially causing various symptoms, including headaches, seizures, or bleeding. AVMs can occur in any part of the body but are most commonly found in the brain and spinal cord. The exact cause of AVMs is not fully understood, but they are often present at birth. Diagnosis typically involves imaging techniques such as MRI or CT scans. Treatment options may include surgery, embolization, or radiation therapy to manage symptoms and reduce risks.