Does Humira cause muscle stiffness or joint aches?

I took a break recently from humira because I suspecting it was causing muscle stiffness and joint aches around my shoulders and shoulder muscles. When I stopped taking the Humira, the aches went away. Now I am back on the Humira and the stiffness and aches are back.

I can't tell if this muscle stiffness is being caused by the Humira or if it's being caused by my flare-up. Anyone experience anything similar?