Classification of headaches
migraine, headaches, headache, pain
MIGRAINE, TENSION-TYPE HEADACHE
There can be several explanations for the high number (55%) of non-classifiable children in our study. One explanation is the challenge of classifying headaches in children using the available questionnaire-based data. Some of the ICHD criteria could not be checked, and for some we only had limited degree of information, which could mean that some headaches may meet the criteria for “probable migraine” or “probable tension-type headache”. An attempt to extend our classification system in this direction failed, as too few criteria could be applied. Part of the explanation for the substantial number of unclassifiable children could be co-existing headache types (mixed headaches) making a specific diagnosis difficult due to overlapping symptoms [Furthermore, it can be challenging for parents and children to answer items related to pain (intensity, quality, and aggravation factors), which are highly relevant for distinguishing between migraine and tension-type headache [