Which deficiency is associated with Niacin?

Niacin, also known as vitamin B3, is essential for the proper functioning of the body, particularly in the metabolism of carbohydrates, fats, and proteins. A deficiency in niacin can lead to a condition known as pellagra, which is characterized by three classic symptoms: dermatitis, diarrhea, and dementia. Among these, dermatitis is specifically associated with niacin deficiency and is typically manifested as a scaly rash that often appears in areas of the skin exposed to sunlight.

Understanding the connection between niacin deficiency and dermatitis highlights the importance of this vitamin in maintaining healthy skin. Pellagra is historically noted for its association with diets lacking in niacin, particularly in populations heavily reliant on corn, which is low in this vitamin unless treated through nixtamalization or supplemented otherwise.

While other conditions are linked to different deficiencies, the classic signs of niacin deficiency primarily reference dermatitis as a core symptom.