BAsic information description Anemia that is caused by a deficiency of folic acid. It is often occurs along with iron-deficiency anemia. frequent signs and symptoms Fatigue and weakness. Red, sore tongue. Mouth ulcers. Pale skin, gums, eyes, and nailbeds. Shortness of breath. Irritability. Nausea, vomiting, and diarrhea (rare). Numbness and tingling of fingers and toes. causes Complication of pregnancy. A woman's body needs eight times more folic acid than usual...