Thanks for writing to us.
Only probabalities can be discussed as we have not clinically examined you.
or boil due to hair follicle infection
.This needs to be drained by your MD after reducing the inflammation with a course of Antibiotics.
2)Infected Sebaceous Cyst;
Due to its location you would have noticed the swelling only recently as the swelling would have inflamed and creating pain and tenderness.The blocked oil producing sebaceous gland
when inflamed becomes tense painful and cystic swelling.It needs to be excised along with its capsule"Enucleation".
Cyst:It is present since birth at the junction of fusion of dermatomes embryonically and filled with a Pultaceous material.An X-Ray to rule out intracranial extension to be taken and then the lesion be surgically removed.
Initially with a course of Antibiotics/Antiinflammatory pain will be managed. Later pls undertake Pre-Operative baseline investigations and consult a General Surgeon
for excision of lesion.
wishing you a quick recovery.,
Dr Lt Cdr ASN Bhushan.,