Bronchiolitis is a disease that only occurs in young children and infants seeing as their bronchioles are not yet fully developed.

Most babies can sit by on their own as they enter their 4th to 7th month. By that time, a baby probably has been able to roll over and hold his head up.

Microcephaly is a rare medical condition in which the baby’s head is small and not developed fully while his brain also stops growing

When a child is in a coma, they are unconscious and unresponsive. Although the child may look like they are sleeping, they can't be awakened up even by pain

Heat rash is also known as sweat rash, prickly heat, miliaria, or summer rash. It is characterized by tiny red spots or blisters on the skin.