The incidence rate found in this study is lower than the incidence reported in previous US and Libyan studies. A significant difference in overweight distribution is observed comparing percentage of body weight between US and Parma populations. As overweight and obesity are important factors contributing to IIH development, it is possible that their low percentage in the Parma population may, at least partially, explain the low IIH incidence observed.
We investigated the evolution over time of migraine with aura (MA) in a number of MA patients consecutively referred to the University of Parma Headache Center in the period 1976-86. The follow-up period chosen for our review of the clinical condition of patients varied from a minimum of 10 years to a maximum of 20 years. The study group comprised 81 patients (55F, 26M), 21 of them (14.2%) with at least one parent with MA. Migraine without aura (MO) was also present in 29.6% of the patients studied. Currently, 35% of patients (29.4% F, 46.1% M) have been free from attacks for at least 1 year and 19.4% (13.6% F, 30.8% M) for over 5 years. Moreover, the frequency of attacks has decreased considerably in 54.4% of cases (50% F, 63.7% M); it has increased in only 25% (26.1% F, 22.7% M). The headache has disappeared completely in 11.1% of patients (8.0% F, 18.2% M); it has become less severe in 36.2% and more severe in only 5.5%. The results of our investigation point to a favorable evolution of MA over time.
Our retrospective study was aimed at determining the existence of weekend headache and, if so, whether it has the same clinical features as migraine without aura and episodic tension-type headache, or whether it occurs as a separate form of headache which could find its own place in the International Headache Society classification. For this study, we reviewed the clinical records of 120 patients with migraine without aura and 120 patients with episodic tension-type headache randomly selected among all those referred to the Headache Center of the University of Parma Institute of Neurology between 1985 and 1996. A review of these records suggests that weekend headache exists for both types of headache considered. Clinically, it is interesting to note that the male-to-female ratio for the weekend form of tension-type headache was 1:1, as opposed to 1:3 for general episodic tension-type headache. As regards classification, no evidence so far seems to suggest that weekend headache should be considered as an independent entity. Apart from certain features that appear to be peculiar to this form of headache-such as increased pain intensity-it thoroughly fulfills the diagnostic criteria of the primary headaches from which it evolves. Finally, a few clinical features suggest that the weekend may simply be a triggering factor in migraine without aura attacks, while playing a major role in episodic tension-type headache. However, weekend headache is a clinical entity that clearly needs further study.
The purpose of our study was to identify general factors and distinctive clinical features differentiating patients with chronic cluster headache (CH) evolved from episodic CH and patients with episodic CH. Our study sample included 28 patients suffering from chronic CH evolved from episodic CH and 258 patients with episodic CH; all were referred to the Headache Center of Parma between December 1975 and June 1998. Patients with episodic CH were selected from all episodic CH referrals (n = 485) and selection was based on the duration of the disorder, which was to exceed the average period needed for an episodic form to turn into a chronic form (4.5 years for females and 7.0 years for males). At CH onset, the mean age for patients with chronic CH evolved from episodic CH was older than for those with episodic CH. Among patients with chronic CH, more were smokers or heavy drinkers, and had suffered a head injury. Clinically, episodic CH evolving into chronic CH was characterized by a high frequency of cluster periods, a larger proportion of patients with attacks not occurring strictly within cluster periods, and remission periods lasting less than 6 months. Possible predictive factors in the development of chronic CH appear to be CH onset from the third decade of life onward, the occurrence of more than one cluster period a year, and the short-lived duration of remission periods. The role played by head injury and cigarette smoking in the evolution of the disorder still cannot be established with certainty.
The purpose of our study was to determine whether or not patients reporting weekend headache exhibit distinctive features in their work habits, family life, and leisure on workdays and on weekends as compared to other headache sufferers, and whether or not they are inclined to change their living habits at the weekend. The study was done on an initial sample of 50 patients referred to the University of Parma Headache Centre between October 1996 and April 1997. These patients completed a specially designed questionnaire which, in addition to demographics, contained specific questions relevant to the subject matter being investigated. They were also given a diary which they had to complete for 8 consecutive weeks in order to determine the actual frequency of headache attacks over different days of the week. The questionnaire data were only analyzed for the 38 women in the sample, because there were too few male controls for an accurate comparison with weekend headache sufferers. Among the women with weekend headache, work habits, family life, and leisure were such as to suggest a possible increase in stress and frustration on weekends, which might have made them perceive the headaches occurring on Saturdays and Sundays as more severe. No changes were found in the intake of substances such as coffee and alcohol, nor in cigarette smoking over the different days of the week. Finally, analysis of the diaries showed an increased frequency of headache attacks on weekends only among the men, which seems to corroborate the hypothesis of weekend headache as a disorder typically affecting men.
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