What skin condition is characterized by the presence of red, inflamed patches?

The skin condition characterized by the presence of red, inflamed patches is psoriasis. Psoriasis is a chronic autoimmune disorder that leads to the rapid growth of skin cells, resulting in thick, scaly patches commonly found on the elbows, knees, and scalp. These patches are usually red and can be itchy and painful. The inflammation associated with psoriasis is a direct result of the immune system’s activity, which targets healthy skin cells by accident.

While dermatitis also presents with red and inflamed skin, it typically manifests in response to irritants or allergens, and is more likely to be localized rather than the widespread patches seen in psoriasis. Pemphigus is an autoimmune disease that causes blisters on the skin and mucous membranes rather than inflamed patches. Rosacea features facial redness and visible blood vessels, usually without the thick patches and scales characteristic of psoriasis. Thus, when considering the hallmark symptoms of red inflamed patches, psoriasis stands out as the correct answer.