Stelera

I went to derm yesterday and he was going to take me off Stelera after two shots because my skin, when I saw him the last time, was a mess and very inflamed (bright red).  He wanted to put me on Remicade.  Long story short, skin was improved and was no longer bright red but I now have a rotten cold/flu.  Today my skin is back to being inflamed and the spots that faded are purple.  I guess this is because my immune system is fighting the cold? Seems logical.  For some reason Stel. seems to take a lot longer than other meds. i.e. Enbrel, Humira. to clear my skin.  Ahhhhh but had the cold for a week when saw the derm so..........would like more infor. on this drug.  i know everyone reacts differently..........