welcome to healthcare magic forum
thank you for your query
you have bacterial infection -pyoderma
you feel pain and warm over the lesion .
chance of recurrence and new lesion is there .
do not press or popped the lesion as it will leave scar
you need to take antibiotic cream and medicine
better to consult dermatologist
use good antibacterial soap and get check your sugar level
i hope i answered your question