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.
The definition of contagious depends on whether the rash itself can be spread or the infection that causes the rash can be spread, so some experts may not agree with the designations above. For example, in some cases, the rash is contagious in that someone can get the rash from another person with the rash.In other cases, a person with a rash may be at risk of spreading the infection that caused the rash (which may not necessarily cause a rash in the person who gets infected).here are contagious and noncontagious skin rashes. To make this broad topic more manageable, the following is a list of general categories of rashes that are considered noncontagious: 1  Seborrheic dermatitis. 2  Atopic dermatitis. 3  Contact dermatitis. 4  Stasis dermatitis. 5  Psoriasis. 6  Nummular eczema.