2.4 Probable tension-type headache

Tension-type-like headache missing one of the features required to fulfil all criteria for a subtype of tension-type headache coded above, and not fulfilling criteria for another headache disorder.

Patients meeting one of the sets of criteria below may also meet the criteria for one of the subforms of 1.6 Probable migraine. In such cases, all other available information should be used to decide which of the alternatives is the more likely.