DEFICIENCY SYMPTOMS of Biotin (also called vitamin B7)

DEFICIENCY SYMPTOMS of

Biotin (also called vitamin B7)

Info source:

http://www.livestrong.com/article/380934-what-food-contains-vitamin-b7/

Vitamin B-7 deficiency can occur under certain circumstances. Biotin-dependent multiple carboxylase deficiency syndrome is an inherited disorder causing biotin deficiency. 

People reliant on total parenteral nutrition -- intravenous nutrition -- can also become biotin deficient. You can also become deficient if you eat too many raw egg whites. A substance in egg whites called avidin binds with vitamin B-7 in the intestines, preventing you from absorbing it. Smokers also may be at risk for vitamin B-7 deficiency. Symptoms of vitamin B-7 deficiency include dry and scaly dermatitis, nausea, vomiting, anorexia and alopecia. Depression, listlessness, hallucinations and tingling in the arms and legs can also occur.