Lines Around My Mouth in Sclero Forums (MAIN) Posted October 27, 2006 · Report reply Hi Jennifer, I have microstomia (big word for small mouth) and I have one particular deep vertical line above the left side of my upper lip. It kinda looks like a scar almost. I can tell my mouth has gotten smaller just by looking :mellow: and I see a big difference when I look at photos of me 10 years ago. My rheumatologist says its caused by tightening of the tendons in my face. Its hard for me to look in the mirror. I try not to. You are gorgeous in your photo!