Hi. So About 2 Weeks Ago I Noticed A Dry

Hi. So about 2 weeks ago I noticed a dry itchy patch on my arm a little smaller than a dime. 2/3 days later I get 3 more on my chest. Then one on my stomach. One on my bikini line. Now I have 4/5 new ones on my back affect on my shoulder and 1 on my neck. but it's two weeks later and the very first one I noticed has not improved or gone away. Some are flakey and some are just dry. They only itch every now and then. I recently moved country, and was also on antibiotics anout 3/4 weeks ago. I don't know if these May affect my skin. But the fact that new patches are still appearing daily is bothering me. I have been using hydrocortozone cream on them for over a week and no change. They are small patches, but Iv never had anything like this before