Skin inflammation is a response of the body's immune system to injury, infection, or irritation. It can manifest as redness, swelling, heat, and pain in the affected area. Common causes include allergies, infections, and skin conditions like eczema or psoriasis. When the skin is inflamed, it may produce extra fluid, leading to swelling. This process is part of the body's healing mechanism, but chronic inflammation can lead to further skin issues. Treatment often involves identifying the underlying cause and may include medications, topical creams, or lifestyle changes to reduce irritation and promote healing.