Recognizing the 10 Key Indicators of a Stroke

6. A Severe Headache

A sudden, severe headache that comes out of nowhere with no clear cause can be a sign of stroke. This symptom is most common with hemorrhagic strokes, when a blood vessel in the brain ruptures and bleeds, causing brain cell death. Ischemic strokes can also cause headaches, though this is less common. People who experience painful headaches might be at higher risk of strokes and heart disease. Some people who get migraines, especially those who develop an aura with their headaches, are at higher risk of stroke.