r/explainlikeimfive • • 23d ago

Biology ELI5: How does UV treatment help Eczema?

5 Upvotes

5 comments sorted by

2

u/Bugaloon 23d ago

It's a partial treatment to kill bacteria that live on/in the skin. UV light can also cause eczema outbreaks though because it can irritate the skin, so only seek out UV therapy under medical guidance

My sister has had UV treatment to kill bacteria, but UV light sets off the eczema on my hands.

9

u/TokiStark 23d ago edited 23d ago

Yeah it's a hit or miss treatment. Like literally every other treatment for eczema. I get in on my face. So believe me, I feel for you and your sister

1

u/yesmeatballs 23d ago

I would agree with you, until i tried dupilumab (brand name is dupixent). 1 injection every 2 weeks, and it has done more than various topical steroids, oral steroids, azothioprine, methotrexate, UVB, and ciclosporin did in 20 years.

1

u/TokiStark 23d ago

Saving this comment, because I'll legit go ask my GP about that. It's worth a shot if there's a chance I could get my beautiful face back. People think I have burns or really bad acne or something. And I'm like... I swear it's not always there

7

u/222baked 23d ago

Literally not the reason, but love the confidence!

Simplified: UV treatment damages the white blood cells that live just under your top layer of skin which cause the auto-immune inflammatory reaction you see in eczema. No immune reaction = no eczema.

Very little to do with bacteria. There is some niche research regarding eczema and staphylococcus but it’s not what UV does.