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  • 2002
  • In 2002, Li and Rozen conducted a study of 56 patients at the Jefferson Headache Center in Philadelphia and published the following results: 82% of patients were able to pinpoint the exact day their headache started. (wikipedia.org)
  • dull
  • Quality of the headache has been described as dull and/or pressure-like sensation, and throbbing and/or pulsating sensation. (wikipedia.org)
  • typically
  • However, the discontinuation of overused drugs usually leads to the worsening of headache and the appearance of drug withdrawal symptoms (that greatly depend on the previously overused drugs and typically last from two to ten days and that are relieved by the further intake of the overused medication), which might reinforce the continuation of overuse. (wikipedia.org)
  • diagnostic criteria
  • The two subsequent revisions of the diagnostic criteria for MOH (2005 and 2006) refined and extended the definition of the condition on the basis of both its chronicity (headache on more than 15 days/month for more than three months) and drug classes, thereby identifying the main types of MOH. (wikipedia.org)
  • prevalence
  • The Akershus study of chronic headache, a population based cross sectional study of 30,000 persons aged 30-44 years in Norway, found a one-year prevalence of 0.03 percent in the population. (wikipedia.org)