I had the same pain - except the first time I experienced it, it started in my toe instead of my finger like yours.
Going forward from there, about
4-6 weeks after an infusion I would wake up with a stiff neck, then the next day it would be worse, then it would begin to travel like yours. It would come to a point where it was completely debilitating.
Gi kept telling me it was Arthritis saying people people with IBD are pre-disposed to this condition... I kept saying no. Eventually I stumbled across a forum of others with the same problem. Had to do with your body building up antibodies to Remicade. So you either increase the frequency of your doses from say every 8 weeks to every 6 - or you stop taking it.
I stopped taking Remicade and all pain went away in a week or two. Has never come back since.
You can ask your GI about
a the antibody test from Prometheus Labs.
"PROMETHEUS® Anser™ IFX test. The PROMETHEUS Anser IFX test is a quantitative monitoring assay that allows healthcare providers to measure and monitor serum infliximab and antibodies to infliximab (ATI) levels at anytime during therapy. Incorporating drug monitoring may clarify what factors are contributing to a patient's loss of response and help guide treatment decisions by providing information to help determine an appropriate course of action."
www.prometheuspatients.com/Products_Diagnostics.aspAnd read through this thread as well
www.healingwell.com/community/default.aspx?f=17&m=1040107Hope this helps
Mark