Traditional Chinese medicine believes that lip blistering is generally caused by four fires, while western medicine believes that 90% is caused by viruses with low immunity. I also have it here, and the middle of the lower lip is particularly swollen.
My boyfriend bought two yuan and eighty-one yuan acyclovir ointment, which is antiviral and Sanhuang tablets. Apply the ointment every two hours, and sprinkle the powder in the cephalosporin capsule on the foaming place before going to bed. This morning, it was much better than yesterday, but the scab was ugly, alas.
In short, it is anti-inflammatory and anti-viral. Actually, it's good not to take the medicine for a week or two. It's really painful It will take three or four days. Experience!