Rash, Allergic Reaction, Pimples, Swollen Arms. Using Cortisone, Hydrocortisone, Lotrimin. What Is The Solution?

Question: I have a rash that my family says its an allergic reaction to something. It's red with tiny bumps that look like goosebumps and feels like pimples but aren't. Its itchier now than when it first started out a couple days ago. It has stayed around both arms below the elbows and on top of my hands. My left is a bit swollen and the right arm looks better than the left. I have been using Cortizone with hydrocortizone cream 1% in it. It began on my chin and my chin has cleared up fine with the stuff I was using on my arm. I also put some Lotrimin on my arms and maybe I shouldn't have but the day after it looked even better. But then after that it got worse. Help! What is wrong with my symptom, I have never had this happen to me before. Thanks. I just want a solution.

I would also like to know -
a)Any family members having similar problem?
My sister said she had something similar to it and claimed it was something from flowers. Although her's went away and I didn't get a good look at what her's looked like. I showed it to her of what I had and she says its the same thing she had and to just use the cream.

But this is the first she's ever had it before. I got mines a couple weeks after her's was over. Which doesn't make any sense. It doesn't look to be contagious but an infection or inflammation is all I can conclude at this moment.

b)Is it flat/elevated ?
Elevated, when it is irritated and red/purple.

c)Do you had any outdoor activity/trees, bushes,garden around house?
I do but I don't do much around my house in regards to the trees and bushes.

d)Is it scaly /flaky?
When it was on my chin it was scaly and flaky. On my arm it is scaly and sometimes a bit flaky.

e)Any history of allergy asthma?any new soap or cosmetic or clothing you have tried.

No, everything I've done has been normal. When I did notice it it was from working at the hospital. The only difference I can think of is using a hand wash without using water to clean my hands with and it has a type of moisturizer in it too. After this episode I stopped using the hand wash and stuck to just washing my hands. Although wearing clothes will irritate I tried sticking with shirts and doing activities that required little touching of my arm to prevent further irritation.