Thanks for writing to us.
The swelling you are referring to in all probability seems to be a blocked Sebaceous cyst
with tensely filled secretions inside.If it gets infected and inflamed then it becomes red and tender to touch.
Presently only expressing the contents of the swelling leads to recurrence.
Please consult a locally available qualified Surgeon who will remove the Capsule of the swelling in addition so that it will not recur. It is called Enucleation.
Kindly go ahead with all preliminary routine Blood and Urinalysis
and a pre-op BP check up and a fitness for Surgery.
Wishing you the Very Best.,
Dr Lt Cdr ASN Bhushan.