Skin irritation refers to any inflammation or discomfort that occurs on the skin's surface due to exposure to an irritant. This can be caused by a variety of factors, including chemicals, allergens, environmental conditions, and physical trauma. Symptoms may include redness, itching, swelling, and sometimes blistering or peeling of the affected area. Skin irritation is typically treated with measures to reduce inflammation, such as applying cool compresses, taking anti-inflammatory medications, or using topical creams or ointments.