Greetings,   sorry about your arthritis. Your concern is quite justified but think about why did you get arthritis at the first place, Probably your answer is there for pain as well.  This will help you decide what to pursue whether pain or the actual cure of psoriatic arthritis altogether. Searching the Internet or trying to find answers for cause of psoriatic arthritis will all say autoimmune.  This idea is actually not true.  Medical community does not have a definitive answer for why you get arthritis and straightaway  steroids or pain killers,  etc are prescribed which only still manages pain and not the actual cause. your digestive system has gone the wrong way, particularly your intestine which is the main area of digestive power centre.  Reason for this is many, including wrong time to eat, sleep, poor food choice,  less physical activity,  less sun exposure and host of other problems causes autoimmune state which can diversify into any autoimmune disease depending on impact. In your case skin has been impacted causing psoriatic arthritis.

Psoriatric arthritis recovers very slowly..it does not settle immediately..one month is too short a duration..