Background.—The prevalence of chronic daily headache in association with regular use of
analgesics is about 2%. Whether regular use of analgesics has a causal or consequential …

Background and Objectives.—Although chronic daily headache, mainly transformed
migraine, is an important reason for consultation in headache clinics, its actual prevalence is …

Although chronic daily headache is regarded as a syndrome encountered in headache
clinics, clinical characteristics have only rarely been studied and the condition has not been …

Daily or near-daily headache is a widespread problem in clinical practice. The general term
of chronic daily headache (CDH) encompasses those primary headaches presenting more …

Patients with chronic daily headaches are commonly encountered in headache specialty
centers but their clinical characteristics have rarely been documented. We studied 100 …

The study aim is to describe the long-term clinical outcome of 102 chronic headache
patients with analgesic daily use. They were assessed for daily drug intake (DDI), headache …

Chronic daily headache represents a range of disorders characterized by the occurrence of
long-duration headache 15 or more days per month. The classification of these disorders …

Clinical evidence suggests that chronic daily headache (CDH) occurs in association with
psychopathologies: previous studies have focused particularly on migraine. To evaluate this …

Headache characteristics are described in 139 patients with chronic daily or almost daily
headaches due to regular intake of analgesics and the short-and long-term results of drug …

Background.—Chronic daily headache (CDH) is one of the more frequently encountered
headache syndromes at major tertiary care centers. The analysis of factors related to the …