A threshing floor in Santorini in Greece. Russian women using a hand powered winnowing machine in a barn. Note the board across the doorway to prevent grain from spilling out of the barn, this is the origin of the term threshold.
Psoriasis is not contagious. It is not something you can âcatchâ or that others can catch from you. Psoriasis lesions are not infectious and cannot be passed from person to person.It is okay to have contact with people who have psoriasis.t is not something you can âcatchâ or that others can catch from you. Psoriasis lesions are not infectious and cannot be passed from person to person. It is okay to have contact with people who have psoriasis.
Still, you can do a lot on your own to help control and prevent flare-ups. 1  Use moisturizing lotions. Symptoms get worse when your skin is dry, so keep it moist with creams and lotions. 2  Take care of your skin and scalp. Be careful with your skin. 3  Avoid dry, cold weather. Climate can have a big effect on psoriasis.  Use a humidifier.