Comorbidities in cluster headache and migraine.

TL;DRAbstract

The aim of this study was to investigate the most frequent comorbid diseases occurring in patients with cluster headache (CH) and, for comparison, in migraine patients. Over a period of eight years 130 patients with CH and 982 patients with migraine were diagnosed according to ICHD-II criteria. In all patients the presence and type of different diseases were assessed from medical records and coded by the ICD, X revision. Odds ratios (OR) with corresponding 95% confidence intervals (95% CI) were calculated by logistic regression analyses. Comorbid disorders were present in 56.9% patients with CH and in 56.7% migraine patients. Chronic sinusitis (p = 0.001), malignancy (p = 0.012), diabetes mellitus (p = 0.021), glaucoma (p = 0.038), as well as another primary headache disorders were more frequently present in patients with cluster headache (p = 0.001), than in migraine patients. In the multivariate analysis, chronic sinusitis (OR = 7.6, p = 0.001) and diabetes mellitus (OR = 4.2, p = 0.

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