Eczema (atopic dermatitis) is a common skin condition that causes dryness, itching, redness, and inflammation. It can appear anywhere on the body and often flares up in response to triggers like allergens, stress, or irritants. The exact cause is unknown, but it’s linked to genetics and an overactive immune response. Treatment includes moisturizing, avoiding triggers, and using medications like steroid creams or antihistamines to manage symptoms.