Intractable cough as characteristic symptom of neuromyelitis optica and neuromyelitis optica spectrum disorder. Fujita-Nakata M, Tomioka R, Tanaka K, Nakanishi M, Nagayama S, Takahashi R, Machiya T, Hamada T, Matsui M Mult Scler. 2015 Jul 21. PMID: 26199354. Abstract CommentRecommendBookmarkWatch