I've always been told to keep the area clean and use neosporin , a topical medicated ointmment that works on almost any cut or abrasion. But ofcourse, you should always call and check with you physician to make sure you aren't allergic to anything before using it.
Stop picking it.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them