It lasts for anywhere from four hours to three days
It is no great trick to diagnose it. Caffeine withdrawal causes a dull headache. Cluster, tension, and sinus headaches are covered before.
Foods can be the culprit or can aggravate the effects of other allergens.
It is often caused by environmental allergies. A sinus headache is a constant ache in the forehead or under your eyes. As its name implies, it will hit when you are stressed and go away when you relax. A tension headache is a diffuse, constant ache, rather than a throbbing or stabbing pain. And while sleep will often make a migraine go away, it will not do a thing for cluster headaches. It does not bring the light sensitivity or visual aura that are characteristic of migraines. Its name comes from the fact that it occurs in clusters, arriving day after day on the same side of your head, and then vanishes for months. It centers around one eye, which turns red and begins to water.
A cluster headache lasts only an hour or so, but it is excruciating. The blood vessels then expand, causing nerve endings to send a painful signal to the brain centers that perceive pain. The prevailing theory about their cause is that, in response to some trigger-foods, perfume, cigarette smoke, stress, sunlight, too much or little sleep, or changing weather-blood vessels inside the brain constrict, sometimes leading to the peculiar visual auras and other sensations. Migraines can start up at any age and tend to run in families. You may get a brief warning aura of flashing lights, blind spots, or blurred vision, although most migraines arrive unannounced. Neither of these generally has the nerve symptoms that blood vessel abnormalities can bring.
By contrast, migraines will at least occasionally affect either side of your head, and cluster headaches will often switch sides when a new cluster begins. Blood vessel abnormalities can cause headaches that arrive repeatedly on the same side of the head. Glaucoma sometimes presents as a headache with eye pain and vomiting. The doctor will then insist on prescribing steroids to prevent serious complications, such as blindness, and that is good advice. Your doctor will do a blood test, called a sedimentation rate, and will appear disconcerted by the result, which in temporal arteritis is often high.
You will also notice that you have been feeling run-down and tired for some time and have pains in your muscles and joints. Temporal arteritis is a one-sided, throbbing headache caused by an inflamed artery on the side of your head, which is firm to the touch but sensitive. Doctors are also on the lookout for headaches resulting from injuries, fever, medical illnesses, dental problems, and other less common causes. If you are a coffee drinker, it kicks in when you miss your daily dose, and a cup of coffee quickly relieves it.
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