Tanning addiction in psoriasis patients

[Forest Walker]

That's a healthy way to be, the outdoor gardening in the sun, Kat.  Or outdoor gardening in the gray of an overcast sky.   

The data are gleaned from the responses to the statement, "I try to expose myself to the sun as often as possible."  

Are patients told that being in the sun can help their psoriasis?  Is this the motivation?  I don't know that an addiction can be assumed, though.