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canker soreOne or more painful, recurrent ulcers of the oral cavity or vermilion border, preceded by tenderness and pruritus, which begins as an erythematous indurated papule that rapidly erodes, leaving an ulcer covered with greyish exudate. Time from onset to healing: ± 10–14 days.
fever blisterAny of the minute, often multiple, perioral vesicles filled with clear fluid, caused by HSV. See Canker sores.
fe·ver blis·ter(fē'vĕr blis'tĕr)
fever blisterA COLD SORE.
her·pes la·bi·a·lis(hĕr'pēz lā-bē-ā'lis)
Synonym(s): fever blister.
Patient discussion about fever blister
Q. Are cold sores contagious? My boyfriend has cold sores on his mouth. Can I catch it from him? If so, how can I prevent catching it?
Q. i just got over a cold sore using abreva is this best remedy to use? i didnt get a cold sore for while but i think problems lately have caused them to appear?