I’ve been taking Sulphasalazine and Prednisolone for about a year for psoriatic arthritis in my feet and ankle. They appear to be working. But in the last month, my left hand has started to show symptoms. My middle finger is swollen, rigid and painful in the morning and slowly gets slightly better throughout the day. I assumed because I’m on tablets that I won’t get new areas being affected. Has anybody else had similar?