Those who experience chronic headaches tend to think the worse about their
condition. Fortunately, less than 2% of all headache cases are the result of a
serious underlying medical problem. Nonetheless, headache sufferers should
visit a doctor if their headache is accompanied with:
Blurred, Double, or
Loss of Vision
Fever, Hives, or
Convulsions
Confusion
Severe Vomiting
Loss of Consciousness
Four or More
Headaches within 7 Days
Muddled Speech
Although rare, severe headaches may be a first sign of a life-threatening
illness such as stroke, malignant cells, brain hemorrhage, aneurysm, or brain
infection.