Abstract
Vasculitis complicating coccidioidal meningitis is becoming increasingly recognized. At this time, predisposing clinical features have not been elucidated. Histologically, 2 types of vascular inflammation have been described. The first is a transmural inflammatory process of the intracranial blood vessels that occurs early in the course of disease. Encroachment of the vessel lumen may result in thrombosis. The second process occurs with chronic disease and is associated with intimal thickening and luminal occlusion with little inflammation. Numerous substances, including metalloproteinases, cytokines such as tumor necrosis factor (TNF)-alpha, and an elastase, have been postulated as putative virulence factors. Recently, a rabbit model has been developed that appears to closely mimic human disease. By using this model, a parallel between coccidioidal vasculitis and temporal arteritis has been developed. Currently, there are no established therapies for coccidioidal vasculitis. The use of corticosteroids is controversial. Of interest are agents that may block the pathologic process, such as omega-3 oils, and pentoxyfylline.
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