The earliest symptoms of anemia in infants might include dizziness, fatigue, and tiredness. The most common and notable sign is a pale complexion. The severity of the symptoms depends on the speed and degree of anemia, as well as the body's compensatory abilities. Other possible symptoms include tinnitus, headache, insomnia, frequent dreaming, memory decline, and lack of concentration. Additionally, there can be shortness of breath or difficulty breathing, palpitations, and some might experience digestive issues such as bloating and reduced appetite, among other manifestations.