Variants include plaque, pustular, guttate, and flexural psoriasis. There are five main types of psoriasis&colon; plaque, guttate, inverse, pustular, and erythrodermic. They include pustular, inverse, napkin, guttate, oral, and seborrheic-like forms. Typically, guttate psoriasis erupts after a throat infection, or strep throat. The treatments used for plaque psoriasis can also be used for guttate psoriasis. Genetic and environmental factors can influence the predilection for guttate psoriasis. The term "guttate" is used to describe the drop-like appearance of skin lesions. Guttate psoriasis has drop-shaped lesions. Guttate psoriasis can typically be diagnosed by clinical examination alone. Guttate psoriasis accounts for approximately 2% of psoriasis cases. Guttate psoriasis is often triggered by a streptococcal infection, typically streptococcal pharyngitis. Guttate psoriasis is characterized by numerous small, scaly, red or pink, droplet-like lesions (papules).