My first consultant who was involved in research and has been practising for many years thought it was psoriatic arthritis and we discussed DMARDs prior to X-rays, MRI on sacroiliac joint plus bloods. With all the info he decided I had osteoarthritis. I knew him from my days of working in the rheumatology years ago when he collaborated with the study I was working on. He had many patients who sung his praises highly that I had interviewed so when I needed to see a rheumatologist privately as my GP refused to refer me on the NHS, I chose him which clearly with the benefit of hindsight was a mistake.
However he was wrong and I walked out of the appointment with second consultant with the diagnosis of psoriatic arthritis I knew I was getting before I went in. My current rheumatology team is at another hospital and have confirmed it is psoriatic arthritis.
If you have psoriasis plus joint issues and inflammation there is unfortunately a good chance it is psoriatic arthritis. Tendon involvement and feet issues are very common. The tendon issues in psoriatic arthritis is called ethesitis and it is inflammation in the tendons where the tendon meets the bone and I think from memory of a talk I listened to that the NICE prescribing protocol is a bit different when enthesitis is involved .
Unfortunately DMARDS can be hard on the liver but there are a newer classification of drugs called biologics which are more potent but generally a bit kinder on the body. Any one prescribing anything for you would need to look at all your other medications and make a decision based on that.
There is a problem with some clinicians not recognising the symptoms of psoriatic arthritis as indeed happened to me, which is why Bath University published this paper this year:
https://www.bath.ac.uk/announcements/scientists-urge-earlier-diagnosis-and-treatment-of-psoriatic-arthritis-to-prevent-permanent-damage/
Unfortunately I do now have joint deformity that has occurred since I was fighting to get diagnosed and the psoriatic arthritis demolished an already damaged hip as I had undiagnosed hip dysplasia but was ok and could run 10k. When the inflammation from the PsA kicked in my hip joint deteriorated rapidly and significantly so by the time I had my op the surgeon said approx a third of the top of my hip joint had been destroyed and I had to use two sticks to walk to the toilet.
With hindsight I have had psoriatic arthritis for many many years (mid teens I think) with long periods of remission. Menopause kicked it off badly which is common. I only knew about a family history of psoriasis in 2021 when my Dad was diagnosed for the first time shortly before he died aged 84. Apparently my brother, aunt and cousin also have it which I was unaware of. At that point it clicked that what I thought was bad dandruff after pregnancy wasn’t, that what I thought was a heat rash was inverse psoriasis and that I have had mild nail psoriasis and that this was all connected to all my various joint issues that came and went over a long period of time. Psoriatic arthritis can present before psoriasis in people with a family history.
It is also really important to understand that in some people who have visibly swollen joints and often some joint damage that their blood tests do not show anything and as mentioned above this is called sero negative. It can happens in RA and other autoimmune conditions but is really common in psoriatic arthritis. I totally understand wanting bloods to show something.