Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with a doctor.
Without the ability to examine and obtain a history, I can not tell you what the exact cause of the symptoms is. However I will try to provide you with some useful information.
BoTox is frequently used to treat a condition called hemifacial spasm. This injection can provide palliative relief, but does not completely resolve the condition. The effect may last 3-4 months. It is unclear what long term effects of BoTox will do. The main side effect is weakness of the muscles that are injected.
Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.
Might the symptoms be classified as Tardive dyskinesia? Tardive dyskinesia is where you have repetitive, involuntary, purposeless movements, such as grimacing, tongue protrusion, lip smacking, puckering and pursing of the lips, or rapid eye blinking. Does this sound like what you have?