Hello. Thank you for writing to us
I suggest a possibility of bacterial infection i.e
Furuncle, given that the area is tender and also there is regional lymph node enlargement.
I suggest a course of an Oral antibiotic for a week.
My choice would be either
Amoxycillin or
cephalexin for a week. This would take care of the bacterial infection.
Topically you may use an OTC topical antibacterial e.g
mupirocin 2% ointment, twice daily for a week.
An OTC oral anti-inflammatory / painkiller e.g
ibuprofen twice or thrice daily will provide you symptomatic relief from pain and swelling.
Since the infection is situated in hair bearing area therefore I also suggest you to use an antiseptic shampoo e.g cetrimide 5% shampoo every alternate days.
This would not only help drain and loosen up adherent discharge but also aid in faster recovery as well as prevent a recurrence.
Avoid using hair oil.
Regards