(HealthDay News) -- Headaches, especially when they occur suddenly and frequently, can signal a serious condition that requires more than an over-the-counter pain reliever.

The Womenshealth.gov says your doctor should evaluate your head pain if you:

• Have headaches that occur several times per month and last for hours, or even days, at a time.
• Have headaches that interfere with school, work or home.
• Have headaches accompanied by vision changes, vomiting or nausea, numbness or tingling.
• Have headaches that cause pain around an ear or eye.
• Have headaches that are severe and are accompanied by a stiff neck.
• Have headaches accompanied by confusion, loss of alertness or convulsions.
• Have frequent headaches all of a sudden, when headaches used to be rare.

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