I have it ... I suffer from psoriasis - of one foot, one finger and its nail, I also have other nails lifting from it, my scalp at times but it has been clear for a while and I have had other patches that come and go but have not had them for a couple of years ... i have been diagnosed three years ago with PsA (Psoriatic Arthritis) my X-rays showed damaged bone in the finger affected by psoriasis but I also suffer from stiff sore and swollen hands and feet with pain the travels up my legs if I don’t rest. I also surfer from fatigue, tiredness and all over body ache, plus pain deep in my hips as well as tenitus (ringing in the ears) mouth ulcers (psoriasis of the gums), itchy dry eyes that are red, pain where tendons meet the bone especially at the heel (planta fistula) ... about 7 months ago I was also told I have fibromyalgia which also has many overlapping symptoms ... I also have had lower back pain from bulging disks and neck pain from degenerative arthritis but these have not given me a lot of trouble lately)....

I hate to say this but your Dr is probably right. I have 2 small spot of psoriasis and i was diagnosed with PsA. I had never heard of it and was never told you could get arthritis from psoriasis. Get as much information as possible so you get a better understanding of this condition.

I have sciatic pain in my left leg and hip. I have had back issues that is how I was diagnosed with psa I hurt for over a year. I was diagnosed in 2015 and I also have degenerative disc disease. So don't be in denial you might need a biologic to start helping.

I have had PsA in my Sacroiliac Joint for over six years.
First time it manifested I could bend down for ten hours, in frustration I jumped into hot shower for 15 or so minutes and was then able to force myself to bend over and finally, on leaving the shower, sit down.
That’s when are started using capsaicin cream (zostrix) post being to get around. If you use capsaicin cream wear gloves when applying.