It’s a pain in the butt - flare ups - just me?

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I have had two medications now. I have injections 40mg, once a week, then I was put on a cheaper injection but I can’t understand why I have such terrible flair ups! I thought that having the injections I would not have flair ups, well, how I was wrong! They are so bad I can’t even butter a slice of bread and most times I can’t get out of bed. I am so sick of the pain I end up in tears. I have flair ups pretty often and now I have this lump on one of my fingers. I have pain in all of my joints and even in my jaw lately. I have dry eyes and mouth and I get spots on the top of my arms and my skin is dry and itchy. Has any one got any ideas what I can do?