| http://www.w3.org/ns/prov#value | - adaches that begin after age 50Headaches accompanied by other symptoms, such as memory loss, confusion, loss of balance, changes in speech or vision, or loss of strength in or numbness or tingling in arms or legs (possibility of stroke or brain tumor)Headaches after head injury, especially if drowsiness or nausea are present (possibility of hemorrhage)Headaches accompanied by fever, stiff neck, na
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