Thanks for writing to us.
In all probabality you have an infected Sebaceous Cyst
.It is an oil secreting microscopic gland blocked and filled by its own secretions. Now as its inflamed with infection it is painful.May be it is overfilled and having pressure effect on nerve
endings and become painful in addition to inflammation.
Kindly get a Chest X-Ray done to find out whether there is extension into Thoracic Cavity/Pleural Space.
Get the routine Blood Tests/Bleeding Time
/Clotting Time /Urinalysis
Get Immunised against Tetanus (Tetanus Toxoid
).This is a presurgical requirement.
After these preliminary procedures go for the minor surgical procedure of its removal by a Surgeon usually under Local Anaesthesia.
All the very best.
Wishing you a quick recovery.
Dr Lt Cdr ASN Bhushan.