What are the symptoms typically associated with Pellagra, a deficiency of Niacin?

Pellagra is a condition that arises from a deficiency of niacin (vitamin B3) and is characterized by a classic triad of symptoms: dermatitis, diarrhea, and dementia. In more severe cases, if left untreated, it can lead to death, highlighting the seriousness of this deficiency.

The dermatitis associated with Pellagra typically presents as a scaling and reddening of the skin, particularly in areas exposed to sunlight. Diarrhea can occur due to impaired gastrointestinal function, and dementia manifests as cognitive disturbances, including confusion and memory loss. The inclusion of death in the description of symptoms underscores the potentially fatal complications related to untreated Pellagra, particularly in vulnerable populations where nutritional deficiencies are common.

Other answers touch on symptoms that are not typically linked to niacin deficiency or Pellagra. For instance, joint pain and muscle weakness relate more to other nutritional deficiencies or conditions rather than to Pellagra specifically. Similarly, fatigue and nausea could occur for a variety of reasons unrelated to niacin, and weight loss and fever may indicate other medical issues but are not characteristic symptoms of Pellagra. Thus, the grouping of dermatitis, diarrhea, dementia, and the potential for death precisely encapsulates the clinical presentation expected from Pellagra.