title: Urinary N-methyl histamine levels relate to the presence of angioedema and decrease with the duration of chronic urticaria.
authors.affiliation: Division of Allergic Diseases, Mayo Clinic, Rochester, Minn.
authors.forename: Bhavisha
authors.initials: B
authors.lastname: Patel
authors.affiliation: Division of Allergic Diseases, Mayo Clinic, Rochester, Minn. Electronic address: Divekar.Rohit@mayo.edu.
authors.forename: Rohit
authors.initials: R
authors.lastname: Divekar
mesh_terms: D000328:Adult; D000465:Algorithms; D000799:Angioedema / Q000175:diagnosis*; D015415:Biomarkers / Q000652:urine*; D002908:Chronic Disease; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D008407:Mast Cells / Q000276:immunology*; D008761:Methylhistamines / Q000652:urine*; D008875:Middle Aged; D012189:Retrospective Studies; D053802:Tryptases / Q000097:blood; D014581:Urticaria / Q000175:diagnosis*
chemical_list: D015415:Biomarkers; D008761:Methylhistamines; D053802:Tryptases; C048140:N-methylhistamine