It seems like a superficial bacterial infection or a folliculitis
. You may apply topical soframycin
ointment to the affected area twice daily after cleaning it with dettol
for a week. Use warm water to clean the area and remove the pus with a cotton swab. You do not need oral antibiotics
for this. The topical ointment will suffice.
It will heal in a week's time; keep the area clean and hygienic.
Get well soon.