The International Classification of Headache Disorders (ICHD) is a detailed hierarchical classification of all headache-related disorders published by the International Headache Society. It is considered the official classification of headaches by the World Health Organization, and, in 1992, was incorporated into the 10th edition of their International Classification of Diseases (ICD-10). Each class of headache contains explicit diagnostic criteria—meaning that the criteria includes quantities rather than vague terms like several or usually—that are based on clinical and laboratory observations.
The ICHD was first published in 1988 (now known as the ICHD-1). The second and current version, the ICHD-2, was published in 2004.
Famous quotes containing the words headache and/or disorders:
“It is immoral to get drunk because the headache comes after the drinking, but if the headache came first and the drunkenness afterwards, it would be moral to get drunk.”
—Samuel Butler (1835–1902)
“It no longer makes sense to speak of “feeding problems” or “sleep problems” or “negative behavior” is if they were distinct categories, but to speak of “problems of development” and to search for the meaning of feeding and sleep disturbances or behavior disorders in the developmental phase which has produced them.”
—Selma H. Fraiberg (20th century)