I had a wisdom tooth extracted nearly 3 weeks ago. unfortunately some of the block went into my jaw muscle and I now have trismus. More alarming though is that my facial muscles feel very much weekened and smiling is an effort. Also I have had twitching above my lip and up cheek and under eye. I am very concerned as I am a music teacher. please help
Thanks for your query, I have gone through your query. The twitching over the facial muscles and Erasmus can be because of the nerve injury to facial nerve while injecting the local anesthesia. The Erasmus is because of the injury to the muscles of mastication while injecting the local anesthesia. Nothing to worry, the twitching will come down gradually over a week. You can take nerve regenerating Chat Doctor.  For the Erasmus, you can take a muscle relaxant like chlorzoxazone. I hope my answer will help you, take care.