For some background, I'm a 32 yo female who has received morpheus8, microneedling and sylfirm in the past without issue. A couple months ago I received sylfirm x on my face and neck. AFter the secon treatment I noticed a thick band from the mandibular angle and downwards around 3-4 cm. This has persisted for over 4 months. The area is tender to the touch and feels like adhesion in the connective tissue. I have tried massaging the area but it continues to remain localized to that one area. What is causing this?