Global developmental delay
Significant delay across two or more developmental domains in children under five, starting with broad multidisciplinary assessment before any domain-specific therapy.
What it is
Global Developmental Delay (GDD) describes a significant delay — generally performance two or more standard deviations below the age-expected mean on standardized testing — across two or more developmental domains in children under five: gross/fine motor, speech/language, cognition, social/personal development, and activities of daily living. Because it spans multiple domains, broad multidisciplinary assessment precedes any domain-specific therapy.
Common symptoms & concerns
- Delay present but the child engages, learns, and participates with modest support
- A clearer delay across domains requiring structured, ongoing multidisciplinary therapy
- Pronounced delay across most or all domains, requiring intensive, coordinated intervention
- Delayed walking or sitting, limited communication, poor coordination/balance, or limited problem-solving
Assessment & care
Assessment approach
Assessment is broad and multidisciplinary from the start, evaluating all developmental domains together — and looking for a treatable metabolic or genetic contributor where suspected — before domain-specific therapy begins.
In-scope care
In-scope care includes physical, occupational, and speech therapy directed at the specific domains affected, with a functional-medicine work-up (metabolic/gut assessment, genetic testing) available where a metabolic or genetic contributor is suspected. Identifying a treatable underlying contributor before or alongside domain-specific therapy can change the therapy plan itself.
Treatments used
Related questions
Global developmental delay refers to significant delay across two or more developmental domains in children under five, whereas autism specifically involves communication, social interaction, and behaviour; the two can co-occur.
Sometimes; a functional-medicine work-up including metabolic and genetic testing is used where a treatable underlying contributor is suspected, though many cases have no single identified cause.
This varies significantly by severity and underlying cause; broad multidisciplinary therapy started early gives the best chance of functional progress, but no specific outcome is guaranteed.