I havery psoriasis arthritis which is not nice developed from psoriasis. I havery used many treatments over the years oil of cade was nice on your scalp and 20% tar on you body was warming. Betnovate is dangerous to use long term thins your skin they used to weaken by adding paraffin emulsion. Puva treatment with medicine and ultra violet lights was time consuming and never worked with me. DITHO cream burnt the lesions off stained everything and worked for a while .Diet adjustments help tomato is off the menu , potato cut down milk can be bad switch to skimmed helps.
Then I got then the arthritis arrived itsafely weird in the psoriasis attacks joints like rheumatoid arthritis. It's attacked most of my joints and it leaves them, oddly it has never come back into a joint twice. Damage can be bad and I have a couple of fused joints and I do not take any pain relief ato all, never have.
I have been taking differing drugs for this over the years and with a good degree of success. Methotrexate orally and injection, foul stuff that makes you ill as its a cancer treated drug , sulfasalazine turns everything yellow including sperm. I progressed to TFN drugs all self injected once or twice a week enbrel , Humira, Golimumab and then tofacitinib with steroids and I am fine. I do not let it bother me or restrict me , well contact sports are out as is water skiing lol. A third of people with psoriasis go onto to develope PA so important to get an early diagnoses and treatment to prevent damage. I was lucky caught me early and i know others in wheelchairs. The psoriasis has also disappeared with the drugs, had a miner flare up last year they tinkered with my meds a bit and i got Enstiller canned spray which is brilliant.
These are expensive my tablets alone 2 a day are £600 a month and then regular blood tests as they can be dangerous. It also makes me vulnerable to covid 19 so now shielding , but I am alive and kicking.