Delayed early-childhood social milestone development

What it means

A failure to meet one or more age-related milestones of social behavior.

This term may be applied to describe a child whose social development is delayed compared to age-related norms. For instance, at the age of three months, a child smiles in response to social interaction;. aAt the age of seven months, a child responds to the facial expressions of others;. aAnd at the age of 12 months, a child is shy around strangers.

Rare diseases that can present with this10

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Delayed milestone development