Psoriasiform Reaction Pattern: “The Big Four” = Psoriasis, PRP, Lichen Simplex Chronicus, Chronic EczemasWeedon's Skin Pathology EssentialsSeptember 19, 2023Pathology You're Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here Previous Post Lichenoid Reaction Pattern Next Post Spongiotic Reaction Pattern