Which skin condition is characterized by an inflammation of the skin often causing redness and itching?

The skin condition characterized by inflammation that often leads to redness and itching is eczema. Eczema, also known as atopic dermatitis, is a chronic condition that affects the skin's ability to maintain moisture and protect against irritants. As a result, it often leads to inflamed red patches on the skin, accompanied by intense itching and discomfort.

Eczema can be triggered by a variety of factors, including allergens, irritants, and changes in temperature or humidity. The inflammation associated with eczema results from an overactive immune response, which contrasts with conditions like psoriasis, which is characterized by thick, scaly patches rather than the characteristic itch and redness of eczema.

While melanoma is a serious form of skin cancer and rosacea involves facial redness and visible blood vessels, neither of these conditions focuses primarily on itching or the type of inflammatory response seen in eczema. Therefore, eczema is the correct answer, as it directly embodies the symptoms of skin inflammation, redness, and itching described in the question.