There are many reasons a child might need to stay in the hospital. Your child may have an illness, may need to have tests, or may need to have treatment, such as surgery. The hospital can seem like a large and scary place to your child. For some children, it's their first time away from home or away from parents. They may be worried about what will happen to them. You can help your child by learning more about what goes on during a hospital stay. Know what to expect and prepare your child in advance. This can relieve some of your child's fears and also build trust between you, your child, and your child's healthcare team.