The Papulosquamous Conditions are two kinds: Psoriasis: A hereditary, proliferative, inflammatory disorder of the skin manifested by red papules and chronic scaling plaques. Pustules occur in a characteristic distribution. May include an inflammatory arthritis.
Pityriasis rosea: A common inflammatory skin disease resembling a acute viral exanthem of unknown.
The symptoms of Papulosquamous Conditions are:
Psoriasis: Scaly, red, sometimes pruritic thick patches, primarily on the skin of the elbows, knees, scalp, or trunk. May occur as red, Pruritic, scaly skin, or slightly tender pruritic pustules of palms or soles or as chronic red dots on trunk. May have mild to disabling arthritis.
Pityriasis rosea: Large scaly patch usually on the trunk which precedes spreading lesions of dull redish pink or tawny color on body centrally, spreading peripherally onto extremities. Asymptomatic to significant pruritis.
The causing of Papulosquamous Conditions is said is a bacteria.
Psoriasis: Asymmetric, but bilateral salmon red papules and plaques, with sharp margins and silver/white scale, inflamed pustules or erythrodermic, diffuse, general peely red lesions without sharp border.
Pityriasis rosea: A herald patch precedes more general eruption by 3 days to a couple of weeks. In 80 percent of patients this patch is the largest lesion of the exanthem. The lesions are fawn salmon to bright red in color, are maculopapular and usually have a collarette of fine scales at the margins. Lesions are typically ovoid in shape and are distributed in cleavage lines, like a dermatomal pattern (characteristic Christmas tree appearance) on the back. The exanthem is usually confined to the trunk and proximal extremities.
Both of they are strongly contagious diseases.