_:vb50949215 . _:vb50949215 . _:vb50949215 "A tympanic membrane disease that is characterized by blisters on the eardrum resulting from infection."^^ . _:vb50949215 . _:vb50949215 . _:vb50949215 . _:vb50949215 "url:https://www.nlm.nih.gov/medlineplus/ency/article/001369.htm"^^ .