Association between psoriasis and depression

[Caroline]

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Blood based systemic inflammatory biomarkers are an easily accessible and cost effective tool for identifying psoriasis

We knew that already of course, but they are the complex markers I think, this is not clear in this abstract. 
But we know that if you see excess IL-23 and IL-17, and you have plaques than probably you have psoriasis. 

"Partially mediating"  is a vague term.. 
"However, the precise role of inflammation in the relationship between psoriasis and depression remains unclear." conclusion.. they don't know..

And that there is a relation between psoriasis and depression.....

What do you think ?
There are visible red/white plaques on your skin and skin is falling off. People look at you often with disgust, Children look at you and say " Ieuwwww"...
you get sent out of the swimming pool.
Do you think that that does mean nothing to you psychic condition?

I think depression is obvious.. No need to try to find biomarkers for it... , but maybe details of this research give better reasons.