Of course, the child is not sure if he is sick. Your son keeps saying that he is ill and needs to take medicine. Maybe he took sugar-coated tablets or syrup or something sweet. You can take her to the clinic to consult a doctor. If the child is really not sick, let the doctor tell the child that he is not sick and does not need to take medicine. Or divert the child's attention, and take her to sports or playgrounds to distract him when he is free.