Which skin condition is characterized by red, itchy patches?

The choice of eczema as the correct answer aligns well with the characteristics of this skin condition. Eczema, also known as atopic dermatitis, commonly presents as red, itchy patches on the skin. These patches may be particularly prominent in areas such as the inner elbows, behind the knees, or on the face.

The itchiness associated with eczema often leads to scratching, which can exacerbate the inflammation and result in further irritation. Eczema is frequently triggered by allergens, irritants, or changes in temperature or humidity, making it a common issue among those with sensitivities.

While conditions like psoriasis and dermatitis also involve red patches, psoriasis typically features thicker, silvery scales and has a somewhat different immunological basis. Dermatitis can encompass various subtypes, such as contact dermatitis, but it doesn't exclusively connote the red, itchy patches without other symptoms. Acne primarily affects the sebaceous glands and appears as pimples or blackheads rather than the elongated, patchy redness characteristic of eczema.

Thus, eczema stands out for its specific presentation of red, itchy patches, which makes it the best answer to the question.