For the past few months I have been getting raised bumps of varying sizes on my chest. They range from very small to about half an inch. They are not red, but they do itch. I get them sporadically and it's usually only one at a time. I use Benadryl extra strength cream to make them go away and it generally works quickly, but I want to know what the problem is. My skin is a bit sensitive, so that may have something to do with it.