Light Therapy

“You’ve been waiting a while”

“18 months”

Following a referral that was made on Monday 7th March 2022, I finally had my phototherapy consultation at Salford Royal Hospital on Monday 4th September 2023. And guess what? I didn’t need it anymore!

Screenshot of a text conversation with a doctor.
The start of a very long wait... 

During my era of desperation- at the beginning of what was initially a 60-week waiting list before being delayed twice- I emailed local skin clinics and beauty salons that offered LED Light Therapy. I had read about their benefits and hoped it would be an alternative to that hellishly-long NHS waiting time.

However, I was told that it would not be suitable, because my psoriasis coverage was too widespread. The best offer I received was sessions that would deal with my face only:

“The LED light therapy can help with the psoriasis on the face, but we don’t have a machine large enough for the body as well.”

Left arm and back covered in large, red guttate psoriasis patches.
With psoriasis starting at my forehead and ending on my feet, I longed for urgent treatment. 

It was distressing to know that I would only be receiving proper treatment in over a year’s time; to pay for it privately would have set me back thousands of pounds. This encouraged me to take care of my guttate psoriasis alone.

What is phototherapy, though? Also known as just light therapy, it is a procedure where doses of ultraviolet (UV) rays are projected onto the skin in order to slow its growth. Afterall, psoriasis marks occur where new skin cells are being produced too quickly. This is done so at regular intervals, meaning several trips to the hospital over a period of 6-8 weeks.

This is different to the aforementioned LED Light Therapy, which doesn’t use UV rays (light in different wavelengths i.e. red and blue are applied instead). Too much phototherapy can increase the risk of skin cancer due to repeated ultraviolet light exposure- the same reason why staying in the sun for too long is dangerous.

Another type of phototherapy- or, photochemotherapy- is PUVA. It gets its name from Psoralen (the 'P') that is ingested/applied topically to make the skin more sensitive to the Ultraviolet A (the 'UVA') light that is administered. PUVA is immunosuppressive and therefore associated with an increased risk of skin cancer.

Before I go on to the appointment, it’s important to know that using a tanning bed is not the same as phototherapy. The UV wavelengths used in the latter are very specific- and different to those emitted in sunbeds, which are actually more harmful. Furthermore, the beams of light in phototherapy are highly focused, measured and directed onto psoriasis patches, unlike a sunbed’s all-over exposure. If you know anyone using indoor tanning to try and treat their psoriasis, please tell them to stop.

Selfie of a smiling man wearing a light tie-dye t-shirt standing in front of a blue hospital sign reading: 'Dermatology'.
The sun was shining down on me at what I hope will be my last dermatology consultation.

So, visiting a dermatology department once more, I was more or less told things that I had already found out for myself long ago. My progress pictures were looked at, and it was agreed that strep throat was the likely trigger.

I was informed that a flare-up can cause stress, which can then aggravate it further (elementary!) before being told that I definitely don’t need light therapy. I was reminded of the increased risk of skin cancer associated with it.

When asked if I still used steroid creams, I spoke about the homemade body butter, Colloidal Oat Cream and Skin Salvation they have been replaced by. I was assured that my appointment would be kept “open” for another 12 months- so if I experience any more guttate, I don’t have to start again at the GP.

I showed my remaining marks. No new knowledge or treatments were bestowed on me…but my t-shirt was complimented twice.

Left buttock with three small, red psoriasis dots.
Forgive the booty pic, but these three marks on my left cheek are what's left of my guttate psoriasis!

I do wish I could tell early 2022 Scot that everything was going to be alright. It feels wonderful to have healed myself before requiring phototherapy...

*

...but then 2024 Scot faced a flare-up. Out of my many new research strands, one took me down the infrared saunas path.

To be clear, the lack of scientific evidence and studies means they can only be considered a complementary therapy. Online articles and webpages promoting their alleged benefits are predominantly written by sauna businesses and spas offering this service. 

No sources were impartial or professional enough for me to link to them in this blog. However, I took in information from over 20 of them to understand how these saunas operate: 

Infrared heaters emit an invisible, infrared light which is absorbed by the skin, causing the body to heat up from the inside. Therefore, the body itself is heated, rather than the surrounding air like in a traditional sauna. 

Sauna with wooden benches lit up in red light
Raised body temperature -> Increased blood circulation -> sweating

While most of the sites proceed to talk about toxins being released through the sweat, it is instead understood that the process of sweating is to simply cool ourselves down. They also claim that the sweat shed in an infrared sauna contains less water and more toxins compared to a traditional sauna- but, unsurprisingly, other sources dispute this. 

The majority view of the sites is that, through raising the body’s core temperature, an “artificial fever” is induced, prompting the immune system to act. This improves the immune response and, in turn, eases inflammation (as does the increased blood circulation). I couldn’t find any sources debunking this theory, and ‘temperature as a therapy’ appears to be a reasonable proposal. 

Another benefit put forward is that infrared radiation improves collagen production. This may be true: collagen- a protein needed for supporting and strengthening the skin- is produced in fibroblasts. These cells are said to be stimulated by the radiation to make more collagen. Again, I searched for articles contradicting this, but I did not come across any…but that’s not to say it’s bona fide! 

The claim that it stimulates shedding of overgrown skin, leading to a visual improvement of lesions, is explained by the heat softening plaques and promoting their removal. Warm water and moisturisers tend to be associated with the ability to soften scales rather than ‘dry’ heat, so I’m not all that convinced by this. 

I don’t contest that infrared saunas reduce stress by promoting homeostasis: I’ve only been in traditional saunas two or three times, but they do provide a relaxing experience. 

While we should be cautious of biased companies offering rose-tinted perspectives of infrared saunas, they may not need to be disregarded completely. As mentioned, sauna bathing can be pleasurable...could it be a relaxing experience that potentially assists in the process of overcoming psoriasis at the same time?

Second Light Therapy Consultation

Following my second flare-up, I called Salford Royal again in early April to make use of my "open" appointment. I was seen in mid-May, where the dermatologist made an "urgent referral" for me. Their interpretation of the word "urgent" must be different to mine, because it wasn't until 11th July I went in for the pre-assessment.

Details were taken, advice was given and an MED test took place: this is where small, varying amounts of light are administered to a small area of skin to determine the starting dose.

PIC of MED test marks on my arm

TO BE CONTINUED


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