no need for dermatologist
. all you need is good antibiotic and anti inflammatory drugs and some local antiseptic like pavidone iodine
solution. where are u from . whats your age is your blood sugar controlled
wat medicine you take for diabetes
. only thing I am worried is no pain there. so don't wait. any doc can treat it. but preferably a diabetologist
because of that infection .
good luck keep in touch