Hi,Dear Good Evening,
I went through your query and understood your concern.
I my opinion--Cause and Treatment- on the data given from you is as follows-
a-Mostly it could be - RA of the MCP joint of middle finger.
I would need the Xray/Uric Acid levels /RA factor and anti-CCP antibodies/
ESR to fix the diagnosis along with Clinical data to decide on the treatment for it.
Still without this You have to be concerned as RA is joint disfiguring disease if not treated aggressively in initial stages -
a-Tb anti-inflammatory to take care of the local pain.
b-Consult a Rhuematologist and or/ ortho Surgeon- As RA is most common in 3rd MCP joint ASAP.
c-I would advise first confirmation of RA diagnosis and would ask you to consult Rhuematologist for further treatment regimes to avoid further joint damage in small joints.
This would help you to plan treatment with your Rhuematologist who would treat it accordingly.
Hope this resolves your query.Wish you fast recovery.
Wellcome for more further queries in this regard.