This patient had sort of a reddish-magenta kind of eruption and that was due to niacin deficiency. These patients get a macrocytic anemia. They are very much like patients with B12 deficiency. So they get big red blood cells, but different than patients with B12 deficiency syndrome, they get leukopenic, poor growth and gllossitis. Again, they have overlap with patients who have vitamin B and B2 deficiency, and also pyridoxine deficiency.
Diarrhea is another characteristic of folate deficiency.
The folate is very important for the integrity of the intestinal mucosa. If Now, biotin deficiency is one of the rarer types. Again, there is the overlap between this and the other vitamin B2, B6 deficiencies. Just be aware that they share some similar features. These are its characteristics.