What you have is probably Vitamin B3 deficiency along with iron deficiency. Try a multivitamin pill that contain
B complex vitamins and iron along with ascorbic acid.
Vitamin B12 deficiency can increase the Vitamin B3 loss.
“The best sources of vitamin B3 are found in protein-rich foods such as lean meats, chicken, fish, eggs, cooked dried beans and peas, liver, nonfat or lowfat milk and cheese, soybeans, and nuts.