The DSM-5-TR makes a separate diagnosis of global developmental delay, reserved for children younger than 5 years who fail to meet expected developmental milestones 'in several areas of intellectual functioning'. It applies to individuals who are unable to undergo systematic assessments of intellectual functioning. Developmental monitoring is performed during wellness visits to check a child's development. Health authorities encourage parents to monitor their child's development, the
CDC's program "Learn the Signs. Act Early" provides materials for a child's development is assessed based on expected milestones for actions like how they play, learn, speak, act and move. Missed milestones may be cause for concern, so the doctor or another specialist may call for a more thorough test or exam to take a closer look, this is usually done by going through Developmental Screening. Developmental Screening is a more involved process. The evaluating professional will ask a parent to complete a research-based questionnaire that asks about a child's development, including language, movement, thinking, behavior, and emotions. Developmental Screening is recommended by the
American Academy of Pediatrics (AAP) to all children at 9, 18, and 30 months. The AAP also recommends that all children be screened specifically for
autism spectrum disorder (ASD) during regular well-child visits at 18 and 24 months. If a Developmental Screening indicates a delay, the child should then be assessed with a Developmental Evaluation. Developmental Evaluations are performed by a Developmental pediatrician, child psychologist, or other trained provider with the purpose of Identifying and diagnosing developmental delays and conditions. ==Management==