Suggest Remedy For Bumps In Skin

I have been having bumps on my skin that look like little pimples. I have some on my upper arms but only about 5 so not a lot, but I also have them on my legs mostly on my quads but again about 3-5 on each leg and occasionally 1 various other places on my body like my neck and jaw line. Lately it looks like I am starting to have dandruff right in the front of my scalp in my hair line but only one big dry patch. I also just noticed the other day a red dry patch above my tailbone. Before the scalp and red patch I had these bumps on my skin before and they used to itch and my skin felt like it was burning but I had a lot more bumps and I almost looked like I had chicken pox. I did see a my dr. and a dermatologist and they tried topical and oral steroids that didn't help. I then cut out gluten for a while, by choice even though my dr. didn't think it would be related and it did seem to clear up, but I was able to reintroduce that in my diet for a while almost a year and haven't had too much of a problem but I still keep it to a minimum because it makes me lethargic. Could these all be related? My biggest concerns though is the dry red patch right above my butt.I am almost 30 I have had a lot of stress in my life lately but very healthy.