the signs and symptoms of include dermatitis dementia diarrhea
Pellagra The classic symptoms of pellagra are diarrhea, dermatitis, dementia, and death ("the four Ds").[4] A more comprehensive list of symptoms includes:
Central nervous system disease Encephalitis is an inflammation of the brain. It is usually caused by a foreign substance or a viral infection. Symptoms of this disease include headache, neck pain, drowsiness, nausea, and fever. If caused by the West Nile virus,[28] it may be lethal to humans, as well as birds and horses.