By definition, chronic daily headaches occur 15 days or more a month, for longer than three months. True (primary) chronic daily headaches aren't caused by another condition. There are short-lasting and long-lasting chronic daily headaches. Long-lasting headaches last more than four hours. They include:  Chronic migraine Chronic tension-type headache New daily persistent headache Hemicrania continua  Chronic migraine This type typically occurs in people with a history of episodic migraines. Chronic migraines tend to:  Affect one side or both sides of your head Have a pulsating, throbbing sensation Cause moderate to severe pain  And they cause at least one of the following:  Nausea, vomiting or both Sensitivity to light and sound  Chronic tension-type headache These headaches tend to:  Affect both sides of your head Cause mild to moderate pain Cause pain that feels pressing or tightening, but not pulsating  New daily persistent headache These headaches come on suddenly, usually in people without a headache history. They become constant within three days of your first headache. They:  Often affect both sides of your head Cause pain that feels like pressing or tightening, but not pulsating Cause mild to moderate pain Might have features of chronic migraine or chronic tension-type headache  Hemicrania continua These headaches:  Affect only one side of your head Are daily and continuous with no pain-free periods Cause moderate pain with spikes of severe pain Respond to the prescription pain reliever indomethacin (Indocin) Can become severe with development of migraine-like symptoms  In addition, hemicrania continua headaches are associated with at least one of the following:  Tearing or redness of the eye on the affected side Nasal congestion or runny nose Drooping eyelid or pupil narrowing Sensation of restlessness 
definition  chronic daily headaches occur 15 days month  longer months  true (primary) chronic daily headaches aren't caused condition  short-lasting long-lasting chronic daily headaches  long-lasting headaches last hours  include:  chronic migraine chronic tension-type headache new daily persistent headache hemicrania continua  chronic migraine type typically occurs people history episodic migraines  chronic migraines tend to:  affect side sides head pulsating  throbbing sensation cause moderate severe pain  cause least following:  nausea  vomiting sensitivity light sound  chronic tension-type headache headaches tend to:  affect sides head cause mild moderate pain cause pain feels pressing tightening  pulsating  new daily persistent headache headaches come suddenly  people headache history  constant days first headache  they:  affect sides head cause pain feels like pressing tightening  pulsating cause mild moderate pain features chronic migraine chronic tension-type headache  hemicrania continua headaches:  affect only side head daily continuous pain-free periods cause moderate pain spikes severe pain respond prescription pain reliever indomethacin (indocin) can severe development migraine-like symptoms  addition  hemicrania continua headaches associated least following:  tearing redness eye affected side nasal congestion runny nose drooping eyelid pupil narrowing sensation restlessness 
chronic daily headaches