Symptoms of zinc deficiency include anorexia, picky eating, and xerophagia, while clinical symptoms vary depending on the age group of the patient. Zinc deficiency is also known as zinc deficiency, which is one of the more common nutritional deficiency diseases. The common clinical symptoms of zinc deficiency include anorexia, picky eating, etc., accompanied by loss of appetite, loss of taste, indigestion, and reduction in the amount of food eaten. Some patients may also experience symptoms of xerophagia, which is the tendency to eat inedible substances such as dirt and paper. Meanwhile, most patients also experience skin abnormalities such as dry skin, rashes, dermatitis, and hair loss, as well as decreased immunity, susceptibility to infectious diseases, and decreased vision. In addition to the above symptoms, patients with zinc deficiency at different ages may also experience different clinical symptoms. For example, children and adolescents who are at the stage of physical growth and development may have symptoms such as backward growth, delayed development of secondary sexual characteristics, and delayed intellectual development. If a pregnant woman suffers from zinc deficiency, it may lead to abnormal development of the fetus, miscarriage, premature birth and so on. It is recommended that patients who have recently been examined and found to be zinc-deficient should be treated with zinc supplementation under the guidance of a doctor in a timely manner, so as to avoid the continuous development of the condition and the impact on the quality of life.