OSCAR BURRIEL / SCIENCE PHOTO LIBRARY OSCAR BURRIEL / SCIENCE PHOTO LIBRARY
Headache. Man holding his forehead due to the pain of a headache or migraine. Headaches is a common type of pain. The pain does not come from the brain itself, which contains no sensory nerves, but from the meninges around the brain and the blood vessels and muscles of the scalp. Common causes of headache include hangover, a noisy environment, irregular meals, poor posture and prolonged travel. Rarer causes include high blood pressure or hypertension, and a brain tumour. Medical advice should be sought in cases of persistent headache which do not respond to the common analgesic (painkiller) drugs.
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