The clinical manifestations and symptoms of iron deficiency anemia mainly include symptoms of both anemia and iron deficiency. Symptoms in patients with anemia often include dizziness, headache, shortness of breath and palpitations after activity, difficulty concentrating, easy fatigue, blurred vision, tinnitus, and other symptoms. There are also specific signs of iron deficiency such as cheilitis, glossitis, and atrophy of the tongue papillae. In terms of physical signs, we can find that some patients may have spoon nails. Regarding appetite, some patients may experience reduced appetite, nausea, and even constipation, all of which are general symptoms of iron deficiency anemia. Severe cases may even exhibit transient syncope, visual obscurity, and pica as clinical manifestations.