What symptom is associated with niacin deficiency?

Niacin deficiency is specifically associated with pellagra, which is characterized by the classic symptoms of dermatitis, diarrhea, and dementia. Pellagra arises due to insufficient niacin (vitamin B3) intake or insufficient synthesis of niacin from the amino acid tryptophan in the body. It is important to recognize these symptoms as they represent the body's reaction to the lack of this essential micronutrient.

The other conditions listed are related to deficiencies of different nutrients. Scurvy is caused by a lack of vitamin C, anemia can arise from deficiencies in iron or other B vitamins, and rickets is a result of insufficient vitamin D, calcium, or phosphate. Understanding that pellagra is uniquely tied to niacin deficiency distinguishes it from these other conditions, emphasizing the specific role niacin plays in maintaining health.