Psoriasis, a chronic inflammatory disease of the immune system that primarily affects skin and joints, affects nearly 7.5 million people in the United States.

According to the American Academy of Dermatology, the cost of psoriasis-associated treatment “was estimated to be between $51.7 billion and $63.2 billion,” in 2013.

Marking Psoriasis Awareness Month, Healio Internal Medicine presents the 10 most popular stories on psoriasis thus far in 2016.

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