Psoriatic arthritis and rheumatoid arthritis are similar in some ways. You will be able to read my blog @ https://foodwitharthitis.com/differen... Content. 0:00 - Introduction. 0:38 - Understanding Psoriatic Arthritis. 1:26 - Understanding Rheumatoid Arthritis. 2:21 - Psoriatic Arthritis Vs Rheumatoid Arthritis. 4:10 - Conclusion. Rheumatoid arthritis affects the synovium that surrounds the joint, whereas psoriatic arthritis, also develops in the joints, but also it is close to psoriasis. You are at a high risk of psoriatic arthritis if you have a family member with psoriasis, which means that it is vital that you see your doctor if you see any symptoms. One of the differences is that psoriatic arthritis could develop in the nails and the eyes, whereas rheumatoid arthritis does not. Let's start by understanding psoriatic arthritis, then rheumatoid arthritis. So let's get going ...