This article briefly reviews the spectrum of headaches associated with Chiari type I malformation and specifically analyzes current data on the possibility of this malformation as an etiology for some cases of chronic daily headache (CDH). Chiari type I malformation is definitely associated with cough headache and not with primary episodic headaches, with the rare exception of basilar migraine-like cases. With regard to CDH, there is no clear evidence supporting an association with this malformation. An MRI study would be justified only in patients showing either a Valsalva-aggravating component or cervicogenic features. Hydrocephalus and low intracranial pressure syndrome should be ruled out in patients showing tonsillar herniation in an MRI study and consulting due to daily headache.
Migraine Chronic Daily Headache International Headache Society Chiari Malformation Tonsillar Herniation
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Sempere AP, Porta-Etessam J, Medrano V, et al.: Neuroimaging in the evaluation of patients with non-acute headache. Cephalalgia 2005, 25:30–35.PubMedCrossRefGoogle Scholar
Lewis DW, Dorbad D: The utility of neuroimaging in the evaluation of children with migraine or chronic daily headache who have normal neurological examinations. Headache 2000, 40:629–632.PubMedCrossRefGoogle Scholar
Meadows J, Kraut M, Guarnieri M, et al.: Asymptomatic Chiari type I malformations identified on magnetic resonance imaging. J Neurosurg 2000, 92:920–926.PubMedCrossRefGoogle Scholar
Castillo J, Munoz P, Guitera V, Pascual J: Epidemiology of chronic daily headache in the general population. Headache 1999, 39:190–196.PubMedCrossRefGoogle Scholar
Scher AI, Stewart WF, Liberman J, Lipton RB: Prevalence of frequent headache in a population sample. Headache 1998, 38:497–506.PubMedCrossRefGoogle Scholar