Pellagra is a vitamin B deficiency. It has nothing to do with EFA. You could at least look up the first line of a Wikipedia article? Tryptophan is an essential

Pellagra is a vitamin B deficiency. It has nothing to do with EFA. You could at least look up the first line of a Wikipedia article? Tryptophan is an essential amino acid. It can be caused by decreased intake of niacin or tryptophan,[1] and possibly by excessive intake of leucine. Anyway, in the absence of any sources there's not much I can gain from this discussion, unfortunately.