Hi welcome to Health care magic forum.It is a shifting sort of arthritis
. The pain and swelling comes to one joint at a time when it is cleared come to another joint. though it is not a commen occurance it is happening. I advise you to consult an orthopedic surgeon for diagnosis and treatment.
Besides i advise you to follow some diet recommendations as Avoid taking potato, other tubers, tomato, coconut, cauliflower, fish, other sea foods, as these are prone to cause pain and swelling of the joints.
Take more of green leafy vegetables, pulses, sprouts, milk, egg, fruits juices, and dry fruits. These increase the blood, general health and resistance to such weaknesses. Wishing for a quick recovery and thanks for calling.