FEVER: Headache with a temperature over 100 degrees.
EPIDURAL HEMORRHAGE: An epidural hemorrhage is bleeding outside of the outermost layer that covers the brain. Symptoms include a headache with a head injury in the past few days, in addition to feeling unusually drowsy, and/or vomiting, or feeling nauseous (sick to one's stomach). No temperature over 100 degrees Fahrenheit (F). If this applies to you, it is an emergency, and you should get medical help immediately.
HEAD INJURY: Headache with a head injury within the past few days, without feeling unusually drowsy and/or vomiting, or feeling nauseous. No temperature over 100 degrees Fahrenheit (F). A continuous headache is common following a head injury.
RAISED PRESSURE IN THE EYE: Severe pain in and around one eye, blurry vision in that eye, and nausea or vomiting. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. If this applies to you, it is an emergency and you should get medical help immediately.
SUBARACHNOID HEMORRHAGE: A subarachnoid hemorrhage is bleeding between the first two layers that cover the brain. Symptoms are headache, nausea and vomiting, as well as two or more of the following symptoms: dislike of bright light, drowsiness or confusion, and pain when you touch your chin to your chest. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No severe pain in and around one eye. If this applies to you, it is an emergency and you should get medical help immediately.
INFLAMMATION OF ARTERIES IN THE HEAD: Nausea and vomiting as well as a sudden throbbing pain in the side or sides of the head. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No severe pain in and around one eye. No dislike of bright light, drowsiness or confusion, or pain when you touch your chin to your chest. If this applies to you, it is an emergency and you should get medical help immediately.
MIGRAINE HEADACHES (see section above on different types of headaches for description): Nausea as well as disturbed vision that occurs with vomiting, followed by pain on one side of the head. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No severe pain in and around one eye. No dislike of bright light, drowsiness or confusion, or pain when you touch your chin to your chest. No sudden throbbing pain in the side or sides of the head.
DRINKING TOO MUCH ALCOHOL: Experience of a similar headache while waking up the past several days or more out of the past week. The headache occurs only when drinking a lot of alcohol the night before. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting.
TENSION, BRAIN TUMOR, OR HIGH BLOOD PRESSURE: Experience of a similar headache while waking up the past several days or more out of the past week. The headaches do not occur only when drinking a lot of alcohol the night before. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. If the pain is in the back of the head, tension or high blood pressure is a more likely cause than a brain tumor. If nausea and vomiting is present and the headache reoccurs and is experienced while waking up, this indicates a brain tumor. If the group of symptoms mentioned in this paragraph applies to you, it is an emergency and you should get medical help immediately.
SINUSITIS: Sinusitis is inflammation of air-filled openings (known as facial sinuses) in the bones surrounding the nose. Symptoms are a current or recent stuffy nose and a dull pain and pain to the touch around the eyes and cheekbones that worsens when bending forward. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting. No similar headaches while waking up the past several days or more out of the past week.
COMMON COLD: Headache and a current or recent stuffy nose. No dull pain or pain to the touch around the eyes and cheekbones that worsens when bending forward. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting. No similar headaches while waking up the past several days or more out of the past week.
NERVOUSNESS, TENION HEADACHES: Headache and feeling tense or under stress and/or having poor sleep. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting. No similar headaches while waking up the past several days or more out of the past week. No current or recent stuffy nose.
STRAIN ON NECK MUSCLES: Headache that occur after reading or doing work that requires you to be close to something, such as sewing. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting. No similar headaches while waking up the past several days or more out of the past week. No feeling tense or under stress and/or having poor sleep.
COMMON CAUSES SUCH AS: Hunger, drinking more alcohol than usual, being in a stuff, noisy, smoky area, exposure to strong sunlight. Headache, with the common causes just mentioned, occurring in the 12 hours before the headaches began. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting. No similar headaches while waking up the past several days or more out of the past week. No feeling tense or under stress and/or having poor sleep. Headache does not occur after reading or doing work that requires you to be close to something, such as sewing.
MEDICATION SIDE EFFECT: Headache in addition to taking medication and/or taking birth-control pills. No temperature over 100 degrees Fahrenheit (F). No head injury within the past few days. No nausea or vomiting. No similar headaches while waking up the past several days or more out of the past week. No feeling tense or under stress and/or having poor sleep. Headache does not occur after reading or doing work that requires you to be close to something, such as sewing. The common causes mentioned in the last section have not occurred within 12 hours before the headache began. You should talk to your doctor if you think a medication side effect is causing your headache.