Suggest Treatment For Red Itchy Bumps On My Body

18 years ikd, 130lbs, I was prescribed Minocycline 100mg about 3 yrs ago, Since then ive been getting hives on my butt, and breaking out in itchy red bumps that look like bites from mosquitoes. I have also felt like i couldnt breathe at some times. And I got ulcers in my mouth