###Human: What has caused a painful blister in the inner thigh? ###Assistant: Hello. This is probably folliculitis and occurs due to unhygienic and sweaty local area. You need to keep it clean and dry especially in hot seasons. You should use powder like Nycil daily so as to keep it dry. Now, you should have capsule Augmentin duo 1 g two times a day after food along with some antacid like tablet Pantoprazole 40 mg before breakfast once a day for five days. You should also apply Neosporin powder or ointment Mupirocin two times a day, and after resolution, you should use Nycil powder to keep the area dry and twice daily bathing especially on sweaty days.