My son aged 3 years and 3 months with height of 92 cm and weight of 14.5 kg send weaker than other kids of the same age. He gets tired easily and starts weeping to lift him up. He was having rickets with only frontal bossing and pigeon chest which was treated and looks normal now. He often complains of abdominal pain after taking food. He had received albendazole some months back. He eats less and if not given won't bother to eat. Please suggest.