Stress and Diet

Hi everyone - I am 25 and have suffered with psoriasis since I was 17. I had my worst flare up in 2019, due entirely to stress. I was trapped in the familiar loop of the stress of my skin then exacerbating my symptoms. I was covered in guttate psoriasis from head to toe, had awful facial psoriasis, and a scalp so bad I was losing my hair. I then went on holiday to a country with high UV which miraculously cleared it completely. Following this, I kept my skin at bay for the next few years using Enstilar and getting sunlight. In 2023, I went travelling to the US. There I ate terribly, drank loads and experienced what I now reflect upon as quite intense stress (due to the often inherent stressful nature of travelling). I also took antibiotics whilst I was out there (which I have recently learned disrupts the gut). I started to experience a slight increase of guttate spots on my body. When I got back to the UK, a friend told me about TSW, causing me to immediately stop using Enstilar. As those experienced with psoriasis will probably sense, all of the above resulted in the worse flare up I've had in years. I still haven't used the steriods but I've spent the last year battling with trying to keep this flare up at bay - and I'm really struggling. I went to a dermatologist in April, and he said that the number one cause often not addressed is stress. He said I likely have chronic stress and this can be the cause/exacerbation of my flare ups. I can trace my last two flare ups to stress being present, so this isn't too surprising to me. I, however, don't often see stress mentioned in these forums as a trigger. He also said that diet played no role in flare ups, other than consuming alcohol. My friend is a dietitian who has eczema, and she has similarly said that diet plays no role in the disease, other than if you have other markers of a food intolerance (which I don't). Yet, I see so much on here about various diets, so I feel like I'm at a crossroads. Where I currently am is that I am doing at-home UVB phototherapy (as I am on a 52-week waiting list for the NHS, and simply cannot fathom waiting another year like this), I have only done 7 sessions, but am seeing slow improvement. I have given up alcohol, and have temporarily given up gluten, just to see if it makes a difference. I have also started yoga, meditation and regularly going to the gym to improve my stress. My questions are: 1. Has anyone noticed any particular improvements when addressing their stress levels? Has anybody been told that stress is a strong trigger, which needs to be addressed? 2. Has anybody tried certain diets and NOT seen improvements? I essentially want to get to the bottom of whether eliminating food is often just for people who have a pre-existing intolerance, or whether it would work well for everyone. Happy to hear any other thoughts/suggestions, too. Thank you!