Headache

A headache is a common ailment characterized by a sensation of pain or pressure in the head. Headaches can be caused by a variety of factors, including stress, dehydration, poor sleep, and certain medical conditions. While most headaches can be treated with over-the-counter pain medication and lifestyle changes, severe or frequent headaches may require medical attention.

Also see

• Headache (WikiMD)
• Headache (Wikipedia)

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