If your child is not gaining weight or height at the same rate as others the same age, he or she may have a growth disorder. A child whose height is below the bottom of the growth curve as measured by your physician may have a growth disorder. This may be due to medical conditions, such as genetic disorders, hormone imbalances, disorders of the brain or central nervous system, feeding difficulties, heart or lung problems, blood disorders, chronic infections and many others. Environmental factors can also play a role, including loss of emotional bonding between parent and child, and poor eating habits. If the condition is diagnosed and treated early, normal growth and development can be achieved.