regression
The loss of previously acquired developmental skills or abilities, often indicating underlying medical or neurological conditions.
Full Definition
Developmental regression refers to the significant loss of previously acquired skills, milestones, or abilities in any developmental domain including motor, language, social, or cognitive areas. Unlike temporary skill plateaus or minor fluctuations that can occur during typical development, true regression represents a concerning pattern that may indicate underlying medical conditions, neurological disorders, or autism spectrum disorder. Regression can be gradual or sudden and may affect single or multiple developmental domains. Any reported loss of skills warrants immediate clinical attention and comprehensive evaluation to identify potential causes and implement appropriate interventions. Documentation should specify which skills were lost, the timeline of regression, and any associated factors or triggers.
Usage
Usage note: Always document the specific skills lost, timeline, and developmental domain affected. Distinguish from normal developmental variations.
In Context
- "The family reported regression in language skills, with the child losing approximately 20 words over the past three months." — developmental concern evaluation
- "Any history of regression should be thoroughly documented and investigated as part of the autism evaluation process." — diagnostic assessment protocol