A case of prolonged delayed postdural puncture headache in a patient with multiple sclerosis exacerbated by air travel. Porhomayon J, Zadeii G, Yarahamadi A, Nader ND Case Rep Anesthesiol. 2013; 2013:253218. Epub 2013 Jan 22. PMID: 23401803. Abstract CommentRecommendBookmarkWatch