title: Letter: Multiple sclerosis: absence of fever blisters.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005334:Fever / Q000150:complications; D006560:Herpes Labialis / Q000209:etiology; D006801:Humans; D008297:Male; D009103:Multiple Sclerosis; D013315:Stress, Psychological / Q000150:complications