Psoriasis can appear in a range of different ways, from extensive redness covering large areas to tiny, pus-filled bumps on the hands and feet. Approximately 20-30% of people with psoriasis may also experience psoriatic arthritis, and the condition can affect both fingernails and toenails, often resembling toenail fungus.
Plaque Psoriasis (Psoriasis Vulgaris): Plaque psoriasis is the most common and typically develops on the scalp, elbows, knees, and gluteal cleft (upper buttocks area). The plaques may be itchy and may crack or bleed in severe cases.
Inverse Psoriasis: This variety targets skin folds, such as the armpits, navel, groin, and under the breasts. The plaques here are thinner and lack the usual scales due to higher moisture levels in these areas.
Guttate Psoriasis: Named for its raindrop appearance, guttate psoriasis presents as small plaques that may spread across the body. It often follows a strep infection.
Palmar-Plantar Psoriasis: Affecting the palms and soles, this type can be particularly debilitating, with plaques that may crack and cause severe discomfort.
Pustular Psoriasis: One of the rarest forms, pustular psoriasis is characterized by tiny pustules that often appear alongside symptoms like fever. Triggers include infections, certain medications, pregnancy, or the rapid reduction of corticosteroids. Variants include widespread types like von Zumbusch and localized breakouts like palmoplantar pustular psoriasis.
Erythrodermic Psoriasis: A full-scale medical emergency, erythrodermic psoriasis involves widespread inflammation across nearly the entire skin surface. It can cause significant fluid loss and potentially life-threatening cardiovascular complications.
