Hi,
The commonest cause of sudden pains in small joints are as follows:
Viral inflammation.
Rheumatoid arthritis.
Autoimmune diseases.
These can be diagnosed by the following ways:
Consult an Orthopedic Surgeon or a
Rheumatologist as would be advised by your PCP.
Tests of blood for Rheumatoid arthritis, Calcium, Uric acid and so on as needed.
Till then take an anti-inflammatory medications with painkiller properties as per your body weight.
Give rest to the affected parts.
Further specific management will be as per the cause found and may need oral or local
steroids, anti-inflammatory medications and specific medicines for Rheumatoid arthritis or so.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, General Surgeon