Symptoms

Vitamin B3 (niacin) deficiency, also known as pellagra, can lead to various symptoms and conditions. Pellagra is rare in developed countries due to the availability of niacin-rich foods and vitamin supplements. However, it can still occur in certain populations, such as individuals with alcoholism, malnutrition, or certain medical conditions that impair niacin absorption or metabolism. Here are some symptoms and conditions associated with niacin deficiency: