Constipation with hard, painful stools in a 15-month-old, along with a low hemoglobin level (Anemia), needs both diet correction and medical care. For constipation, increase fluids (water, soups), and include fiber-rich foods like mashed fruits (papaya, pear, prunes), vegetables, and whole grains; limit constipating foods such as excess milk, banana, and processed foods. Establish regular toilet habits and keep the child active. For anemia, your doctor may prescribe iron supplements, which are important but can sometimes worsen constipation, so they should be given along with a proper diet and fluids. In some cases, a pediatrician may suggest a mild stool softener for short-term relief. It is important to follow up regularly to monitor weight, bowel habits, and hemoglobin levels, and seek medical advice if constipation is severe, persistent, or associated with vomiting, poor appetite, or blood in stools.