You have developed foreign body granuloma
The granuloma is due to the material, pierced in ear pinna.
It is a short of abnormal reaction.
Remove the pierced ear pin immediately.
injection will improve the condition.
Oral and local antibiotics may be advocated.
Gradually, granuloma may be subsided.
If the hole is closed., do not open it.
New hole may be tried at different site,but the offending material should be avoided.
I hope you got my answer.
Dr. Ilyas Patel MD