The tooth infection has your immune system ramped up. In this state, the production of offending antibodies is increased, and an increase in severity of symptoms/impairment is a consequence. Were you given an antibiotic for the infection? There are antibiotics that we as MGers must be wary of. Please be sure any antibiotic you take is safe for those with MG. Please ask your dentist which anesthetic he will be using and be sure you know which are safe for MGers, and which are not. patrick123