Children with Development Delay
Delayed milestone, also called developmental delays, is used to describe the condition where a child does not reach a stage at the expected age. In most cases, a wide variety of ages can be considered normal, and not a cause for medical concern.
Milestones are often measured using percentiles, and for many milestones a value between the 5th and 95th percentile does not require intervention, though values towards the edges of that range can be associated with other medical conditions.
If you require any more information about development delay look in