What skin condition is characterized by dry and flaky skin?

Ichthyosis is a skin condition predominantly recognized for its characteristic dry and flaky skin, which can present as thickened patches and scaling. This condition is a result of an abnormality in the process of skin cell turnover, leading to the accumulation of dead skin cells on the surface. The name "ichthyosis" is derived from the Greek word for fish, reflecting the fish-like appearance of the scales that may occur in more severe cases.

While other options also involve dry skin, ichthyosis specifically refers to a genetic condition that can vary in severity, and its defining feature is a pervasive and persistent dryness along with scaling, setting it apart from other skin disorders. For example, eczema and dermatitis are more associated with inflammation and itchiness, while psoriasis is characterized by red, raised patches covered with silvery scales. Understanding the unique features of ichthyosis helps practitioners identify and differentiate it from similar skin conditions accurately.