Nonhealing Oral Ulcer in a Child: Answer.

*Department of Dermatology, American University of Beirut Medical Center, Beirut, Lebanon; and †Department of Otolaryngology Head and Neck Surgery, American University of Beirut Medical Center, Beirut, Lebanon. Correspondence: Ossama Abbas, MD, Professor, Department of Dermatology, American University of Beirut Medical Center, Riad El Solh/Beirut 1107 2020, Beirut, Lebanon, P.O. Box 11-0236 (e-mail: [email protected]). The authors declare no conflicts of interest.