Can I get Juvederm or fillers with Morphea? (photo)

I was diagnosed with morphea scleroderma 5 yrs ago. Indentations had shown up on my legs, ankles, wrists and back. Nothing on my face. I inject 80 units of methotrexate weekly. I’m interested in Juvaderm or similar treatment for wrinkles in my forehead and sides of my mouth. What complications could arise from having an auto-immune disease like morphea or being on methotrexate. Have fillers ever been used to fill the depression/ indentation areas on parts of the body besides the face?