Vasospasm is a condition where blood vessels, particularly arteries, constrict or narrow, reducing blood flow to specific areas of the body. This can occur in various conditions, including migraines and after a subarachnoid hemorrhage, where bleeding occurs in the space surrounding the brain. The reduced blood flow can lead to symptoms such as pain, numbness, or even tissue damage if prolonged. The exact cause of vasospasm can vary, but it often involves factors like inflammation, stress, or changes in blood chemistry. Treatment may include medications to relax the blood vessels or procedures to restore normal blood flow. Understanding vasospasm is crucial for managing related health issues effectively.