Thanks for your query, I have gone through your query. The swelling can be secondary to the hair follicle infection or any infection from the tooth resulting in cellulitis. Nothing to be panic, the antibiotics are temporary solution. once the immunity goes down the infection recurs again, so you need to treat the cause. So consult a dermatologist and an oral physician and get it evaluated. Once the diagnosis is confirmed, we can treat accordingly. I hope i have answered your query. Take care.