Abstract
Objective: This study was carried out to analyze clinical features, transforming factors, associated co-morbidity like depression, anxiety and analgesic overuse in patients with transformed migraine. Materials and methods: This is a retrospective analysis of 420 consecutive headache patients The clinical features of headache were analyzed, like duration of headache, frequency of attacks, migraine triggers, psychological co-morbidity and analgesic use. Results: Approximately 30% patients had chronic daily headache of which transformed migraine constituted the largest group (61%). Fifty three percent patients had psychological co-morbidity. Analgesic overuse was noted in only 16% patients. Seventy five percent patients had more than one year of migraine headache. Conclusion: Transformed migraine is the most common cause of chronic daily headache. The burden of recurrent migraine attacks is the main factor in the transformation of episodic to daily migraine. doi: 10.5214/ans.0972.7531.2007.140203
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