u/nll0908

Can anyone help figure out what this is? Back in June, I had a bad breakout on my chest and face of small red dots, similar sized, with some small heads on my chest and some on my face. Ketoconazole seemed to slowly help. I went to the derm, and he said he wasn’t sure what it was because he didn’t think it was fungal, but couldn’t explain why the ketoconazole was working. It cleared fully on my face, and about 85-90% on my chest over the course of a month with continued ketoconazole use. I eventually stopped using it. This week, it returned on my chest (see pictures) and not yet on my face. Any ideas on what this could be?