Do the seasons effect psoriasis

[Caroline]

Not sure they needed to do much research on this, a simple survey could have given them the same results. 

Personally, I'd rather see a study on "Does Vit D supplements help with psoriasis over summer months" or

Studies find psoriasis patients tend to have more flares when humidity levels reach "x" or even better:

New study shows "this treatment" aids psoriasis patients during summer months or during infection or when under stress.

Because there have probably been studies on Vit D, etc.... it's only when they start talking treatment that I really pay attention.  Even then, I rarely understand it. 

Agree with you Kat.

I myself always take extra Vit D.

And yes, it goes up and down, often with stress levels.