Concomitant Pregabalin and Tramadol Hydrochloride/Acetaminophen Formulation Relieved Neuropathic Itch of Gingiva: A Case Report Journal title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) Authors: Yukihiro Momota, Keiko Aota, Hideyuki Takano, Koichi Kani, Masayuki Azuma Subject(s):