Dermatitis is a general term for inflammation of the skin, which can cause redness, swelling, and itching. It can result from various factors, including allergies, irritants, or underlying health conditions. Common types include atopic dermatitis, contact dermatitis, and seborrheic dermatitis. Symptoms of dermatitis can vary but often include dry, flaky skin, blisters, or rashes. Treatment typically involves avoiding triggers, using moisturizers, and applying topical medications to reduce inflammation. In some cases, a healthcare professional may recommend additional therapies to manage more severe symptoms.