There are a wide range of causes of a speech delay. Some children may have only a delay in language, for which many children "catch up" as they get older and undergo therapy. Other children may have a more general developmental condition where speech delay is one sign of a broader condition, such as autism. Still other children could have other issues such as a hearing impairment. If you notice speech delay in your toddler, you should speak to your pediatrician or a specialized health care provider about your concerns.