Trismus Decrease in mandibular mobility Limited jaw movement Limited mandibular mobility HP:0000211 UMLS:C4228933 Decrease in jaw movement Decrease in mandibular opening Lockjaw UMLS:C0041105 Limited mouth opening UMLS:C1848474 Decrease in mandibular movement Decrease in jaw mobility Limitation in the ability to open the mouth. UMLS:C4280672 Limited mandibular opening Limited jaw mobility SNOMEDCT_US:87866006 Limited jaw opening Pain of muscles of mastication Decrease in jaw opening Abnormal mandible morphology