My daughter age 41 has a lump or a cyste under her right jaw bone. Its painful, and she feels like a toothache, but has no teeth. It hurts to open her mouth to. Her feet has open sores, cracks. Is it possible they could be infected and somehow got in her blood stream, and if so, could it cause lockjaw? It also has been giving her headaches on that side. Hurts to raise her arm also.