Psoriasis

Psoriasis is a chronic immune-mediated condition that causes skin cells to multiply too quickly. This leads to thick, scaly patches that can be itchy or painful.

Common types

• Plaque psoriasis – the most common form; raised red patches covered with silvery scales
• Guttate psoriasis – small drop-like spots, often after an infection
• Inverse, pustular, and erythrodermic – less common but can be more severe

Triggers

Flares may be triggered by stress, infections (especially strep), skin injury, certain medications, smoking, heavy alcohol use, and cold dry weather.

Treatment approaches

• Topical treatments (corticosteroids, vitamin D analogues, retinoids, coal tar)
• Phototherapy (controlled UV light)
• Systemic and biologic medicines for moderate-to-severe disease

Many effective options exist today. A dermatologist can help match treatment to the severity and impact on your life.

When to see a dermatologist

Seek care if patches cover large areas, are painful, interfere with daily activities or sleep, or if you notice joint symptoms.