I had a RA evaluation & it was negative; however, all my fingernails have lines from nailbeds to tips, that are thin, split easily at edges, & I get deep cracks/some bleeding in cold weather. 3 toenails are thickened & lifted. Use OTC anti-fungal. My RA Dr “insists” that I must also have pitting in my fingernails to be PsA. I don’t. I had bilat knee replacements due to arthritis. Foot arthritis Podiatrist said could fuse the bones (I refused), & heel spurs. My dad had scalp psoriasis & probable ankylosing spondylitis. (He was in his 80’s, bent over like an “L” but orthopedic didn’t treat as he was in hospice). I am Dx with O.A. but should I consider 2nd opinion? I live for the hot tub & water class! (Prior to knee surgeries, used cane & store riding carts due to knee& foot pain.) How to find out if it’s PsA? Vs O.A.? when Dr says I don’t have pitting of nails?