Global developmental delay (GDD) is a term used to describe a generalized delay in development caused by an alteration in the functioning of the central nervous system and is usually characterized by lower than average intellectual functioning along with significant limitations in at least two other areas of development. Common signs of global developmental delay include delayed acquisition of milestones (e.g., sitting up, crawling, walking), limited reasoning or development of conceptual abilities, poor social skills and judgement, aggressive behaviour as a coping skill, and communication difficulties. Global developmental delay has many causes which sometimes go undetermined. Early intervention and therapy can support a healthy development and the stimulation of the best capacities for children with GDD.