5 Fast Facts About Psoriasis and Exposure to the Sun

Here’s a quick rundown of the interesting relationship between sunlight and PsO.

Psoriasis and the sun have a complicated relationship. In some ways it can help, but in others it can cause damage or trigger flares. Read on for the important takeaways about this interaction.

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1. Sunlight can be a treatment for PsO

One method for treating PsO is to expose plaques to low levels of ultraviolet (UV) rays for short periods of time. In an indoor medical setting, this is called phototherapy.

Exposure to sunlight is preceded by a rapid reduction in local and systemic inflammatory markers, suggesting that controlled sun exposure can help support the immune system, overall improving the appearance of PsO plaques.

2. Sun exposure can also make your PsO worse

At the same time, sun exposure increases the risk of sunburn. In some people, these burns can trigger Koebner’s phenomenon, which may actually worsen your PsO.

Be sure to limit your time in the sun and always wear sunscreen and protective clothing when possible.

3. Sunscreen is essential

Sunscreen is important for protecting yourself against sunburn, and the right formulation of sunscreen is key. According to the National Psoriasis Foundation, it’s important to pick one that is labeled with the following:

• broad spectrum
• for sensitive skin
• fragrance-free
• SPF 30 or greater

4. Sunlight stimulates vitamin D production

Sunlight stimulates vitamin D production and vitamin D is thought to play a role in regulating the immune system. This is always beneficial when it comes to autoimmune diseases like PsO.

While it’s important to wear sunscreen throughout the day, it’s recommended to have sun exposure without sunscreen for 5–30 minutes per day, most days of the week, to absorb enough UV rays to make vitamin D.

5. Everyone responds differently

Sun exposure affects each person living with PsO a little bit differently.

If you live with PsO, be sure to talk with your healthcare team about sun exposure and PsO.

The bottom line

Being mindful about your exposure to the sun is an important step in taking care of your skin.

When in doubt, consult your medical professional about your skin’s unique needs and reactions to UV rays.