Symptoms of iron deficiency anemia develops slowly, even in mild forms there is no complaint other than pale skin. As iron deficiency anemia deepens, restlessness, loss of appetite, nocturnal sleep disorder, weight loss, and frequent recurrent infections are noteworthy. In serious cases, heart enlargement, tachycardia, fracture and pain in the tongue, koilonychia, muscle weakness, walking difficulty, and hypotonia are observed. One of the most conspicuous symptoms is restlessness. Diagnosis and treatment of this disease is so easy when the symptoms are found, so you should immediately take the necessary treatment by consulting a doctor.