Who's an expert, help! Is it eczema or something? It starts as a pimpl…

Who's an expert, help! Is it eczema or something? It starts as a pimple (like shingles), then flakes off and forms a bump, itches not too much. Like I got pregnant, already had two stomatitis, cold, if there's lichen now, I don't know how to treat it. The doctor said just smear with clotrimazole or zinc paste, at your discretion iodine or chlorhexidine for burning. Plus, herpes on both sides in the corners of my lips.