Botox to Masseter Muscle for TMJ, Bad Side Effects?

I have heard many stories of adverse effects from botox.  You may have had an intravascular injection or having over response or allergic reaction.You need additional evaluation ideally with neuropsych doctor.There are better treatment methods for TMJ disorders.  See patient videos on the web reference.  Ira L Shapira DDS, D,ABDSM, D,AAPM, FICCMO
Past Chair, Alliance of TMD Organizations
Diplomat,  Academy of Integrative Pain Management
Diplomat, American Board of Dental Sleep Medicine
Regent & Fellow, International College of CranioMandibular Orthopedics
Board Eligible, American Academy of CranioFacial Pain
Dental Section Editor, Sleep & Health Journal
Member, American Equilibration Society
Member, Academy of Applied Myofunctional SciencesMember, Academy of Cosmetic Dentistry

     I have not seen such effects after Botox. Botox injection into the masseter should relieve TMJ and clenching problems.

From what you're describing, it sounds like you need to see your primary care physician for further assessment. The Botox treatment to your masseters doesn't cause the side effects you're describing.

A Botox injection to treat the masseter muscles would not have an effect on the brain.  It should also not cause weakness and fatigue.  I doubt that your symptoms are due to the Botox, so I would look into other potential causes for your problems.  

Botox will not travel to the brain from the jawline, and in cosmetic dosages, like for TMJ, such small amounts are used, that these side effects aren't from that treatment. A major flu is going around worldwide, perhaps you have that?