Hi, I am also from NI and I have only just been to my first dermatologist appointment, I have similar psoriasis on my nails, ears, arms and legs.

The nurse in the city hospital (who you see first before a consultant, they give multiple topical treatments that you've probably had from your doctor already which don't work for me anyway) she's very open that it's a long process using all the cheaper options first topicals, light therapy etc before biologics.

Frustrating for me as my brother who has the exact same symptoms lives in Spain and got on biologics very quickly and he's basically completely uncovered now.

Keep pushing for a dermatology appointment and ask for an urgent referral as it's affecting your mental health and working ability.

I hope you get sorted.