The clinical manifestations of iron deficiency anemia consist of symptoms due to the anemia itself, specific manifestations of iron deficiency, and the underlying diseases causing the iron deficiency. The onset of anemia is often insidious, with some patients progressing very slowly. Initially, patients can adapt well to daily life and continue with their work, making it difficult to detect. It is usually not until the anemia becomes moderate to severe and symptoms become apparent that it is discovered. Common symptoms of anemia include dizziness, headaches, weakness, easy fatigue, palpitations, and shortness of breath after activity. Some patients might also experience a decline in memory and suffer from tinnitus and blurred vision. Some affected children may exhibit delayed growth and development or even abnormal behaviors, which can manifest as irritability, restlessness, inattention in class, and declining academic performance. A few patients may develop pica, a specific manifestation of iron deficiency anemia. Additionally, some patients might suffer from angular cheilitis, glossitis, and even atrophy of the tongue papillae. Severe cases can experience transient blindness and fainting, hence it is crucial to seek medical attention for iron deficiency anemia at the earliest.