Signs of Developmental Language Disorder a Nurse Should Watch For

A nurse is often the first to notice when a child's words are not keeping pace with their world — and that early eye can change everything.

In short

Developmental Language Disorder (DLD) is a persistent difficulty in understanding and/or using spoken language that is not explained by hearing loss, a known neurological condition or a global developmental delay. In a paediatric or community setting, watch for a child whose vocabulary, sentence-building or comprehension lags noticeably behind peers, especially where this persists beyond the toddler years. Hearing should always be checked first, and any concern routed for a speech-language evaluation rather than a wait-and-see.

Signs to watch for

Relative to same-age peers, note any cluster of the following:

• Late and sparse first words — few or no words by ~18 months, limited word growth thereafter.
• Slow to combine words — not joining two words by ~24 months; very short, telegraphic phrases when peers are using sentences.
• Restricted vocabulary — frequent word-finding pauses, over-reliance on "this/that/thing", gestures substituting for words.
• Grammar difficulties — omitting or muddling verb tenses, plurals, pronouns and small grammatical words well beyond the expected age.
• Comprehension gaps — trouble following multi-step instructions, answering wh- questions, or understanding stories — often more telling than expressive signs.
• Difficulty being understood — by unfamiliar listeners, where this stems from language structure (not just articulation).
• Conversation and narrative struggles — hard to recount an event in order or stay on topic.
• Secondary signs — frustration, withdrawal in group talk, or behaviour flare-ups masking unmet communication needs.

A red flag worth prioritising: comprehension difficulties (receptive language), as these are easy to miss and carry a higher impact on learning.

When to refer

Rule out hearing first — arrange or confirm audiology, as undetected otitis media or hearing loss can mimic DLD. Refer for a speech-language assessment when language concerns persist, particularly beyond age 3–4, or where there is a regression or loss of skills. DLD is diagnosed by the pattern over time, not a single screen — so document, monitor and route early rather than reassure-and-wait.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from a screen or checklist alone. Our speech and language therapists build a precise communication profile through a clinician-administered structured AbilityScore® assessment, then shape a plan around how each child understands and uses language. Learn more via our developmental support overview.

Trusted sources

WHO ICD-11 (Developmental language disorder); American Speech-Language-Hearing Association guidance on spoken language disorders; CDC developmental milestone resources for early language.

Next step — Spotted these signs in a child you care for? Refer the family for a Pinnacle speech-language assessment.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.