At what age is the developmental milestone assessment first conducted according to the main periods?

Developmental milestone assessments are typically first conducted at around 3 months of age. This early assessment is crucial as it allows healthcare providers to evaluate the infant's growth in areas such as motor skills, social engagement, and communication. By the age of 3 months, infants generally begin to show significant developmental signs, such as increased head control and the beginnings of social interactions through smiling and cooing.

Assessing milestones at this stage helps in identifying any potential delays or concerns early on, facilitating timely interventions if needed. Subsequent assessments are usually carried out at additional intervals, such as 6 months and 1 year, to evaluate ongoing development. These follow-up assessments build on the foundation laid by the initial evaluations, ensuring a comprehensive understanding of the child's developmental trajectory.