What is the skin condition characterized by dark raised areas found in skin folds associated with diabetes?

The correct choice is C, Acanthosis Nigricans. This skin condition is specifically characterized by dark, velvety, raised patches of skin that commonly occur in body folds, such as under the arms, in the groin, and around the neck. It is often associated with insulin resistance, which is a common issue in individuals with diabetes.

Acanthosis Nigricans can signal an underlying metabolic disorder, and its presence frequently prompts further investigation into the individual's glucose metabolism and potential diabetes-related complications. The darkened areas are due to the thickening of the skin and an increase in pigmentation, which distinguishes it from other skin conditions.

In contrast, psoriasis is an autoimmune condition that presents as red, scaly patches, whereas dermatitis refers to inflammation of the skin that can manifest in various forms, including eczema and allergic reactions. Vitiligo is a skin condition characterized by loss of pigment, leading to white patches rather than darkened areas. Understanding the distinct characteristics of Acanthosis Nigricans helps in effectively diagnosing and managing conditions related to insulin resistance.