I have had it for years and it developed into Psoriatic Arthritis not good it can be very debilitating. I was lucky a young trainee doc diagnosed me quick, got a great rheumy consultant and to date after twenty years + I am still fairly ok.
Have been using TFN self injected drugs most of the time alongside metheratrixate ( not nice tablet or injection made me sick) sulphasalazine and steriods. I taken Tofacitinib tablets for around five years and it keeps the arthritis at bay and the skin is mainly ok these days.
If you have it or suspect you have get treatment ASAP, I know someone who didn't and he is in a wheelchair now. I have learned to live with it, I don't give in too it and I am planning a long held walking challenge, the Wolds way