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Herpes simplex virus gingivostomatitis characterized by discrete mucosal ulcerations and diffuse gingival erythema and edema (A) and by numerous yellow ulcerations with thin-walled erythematous halos on patient's tongue (B).
(From Zitelli B, Davis H, eds: The Atlas of Pediatric Physical Diagnosis, 4th ed. Philadelphia: Elsevier, 2002.)
