Good afternoon Doctor. My son had an umbilical hernia repair (no mesh) and a small hernia repair on his left side (repaired with mesh). He is now suffering from leg twitching fasiculations and has had multiple tests including an emg that has produced no answers (he was checked for ms, and other neurological disorders) Brain scan done and there was no diagnosis because there was nothing wrong, spinal surgeon checked his back and while he has a grade b injury doctor advised nothing should be done. He did not have the leg twitching and other side effects including facial numbness, inflammation in his left arm and numbness in his left hand before the hernia surgery so could his body be rejecting the mesh and could these symptoms be a result of the implant?