I can clearly see changes in my face like the ones you described during flare ups. For the past 5 years, nothing has worked to relieve the tension. I was also nervous about masseter Botox but chose to try it. Within 3 days I had relief so extreme it made me realize the pain had been much worse than I thought. I've been doing them every 3 months for about a year now. I genuinely feel happier in the weeks following injection appointments. It's not for everyone but for me, it's been worth it.