acute primary herpetic gingivostomatitis

a·cute pri·mar·y her·pe·tic gin·gi·vo·sto·ma·ti·tis

(ă-kyūt prī'mar-ē hĕr-pet'ik jin'ji-vō-stō-mă-tī'tis) First infection of oral tissues with herpes simplex virus; characterized by gingival inflammation, vesicles, and ulcers.
Synonym(s): primary herpetic gingivostomatitis.