Which condition describes an abnormal high sensitivity to sunlight?

The condition that describes an abnormal high sensitivity to sunlight is known as photosensitivity. This phenomenon occurs when the skin reacts abnormally to sunlight, often leading to an exaggerated response such as rashes, burns, or other dermatological symptoms upon exposure to UV radiation. Various factors can contribute to photosensitivity, including certain medications, genetic conditions, or diseases, making the skin more susceptible to damage from sunlight.

In contrast, hemochromatosis is a disorder related to iron overload in the body, which does not directly pertain to sensitivity to sunlight. Pallor refers to an unusual lightness of skin color, generally due to a lack of blood flow or anemia, and doesn't involve sunlight sensitivity. Jaundice, characterized by a yellowing of the skin and eyes due to excess bilirubin, is also unrelated to the skin's reaction to sunlight. This context highlights how photosensitivity stands out as the relevant condition among the available options.