Pediatrics clinical presentation

Developmental Delay: Investigations

Developmental Delay is a high-yield pediatrics presentation. Learners should reason from acuity and pattern recognition to a prioritized differential, targeted investigations, and first safe management steps.

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Investigations

standardized developmental screening
hearing/vision testing
lead/TSH/genetic testing when indicated
neurologic exam
early intervention referral
age-adjusted vital signs
hydration and respiratory assessment
focused exam for nonverbal cues
targeted labs/imaging based on severity

Red Flags And Exam Traps

Red flags

- developmental regression
- seizures
- loss of milestones
- micro/macrocephaly
- feeding failure

Common exam traps

- waiting to see without referral
- missing hearing loss
- missing regression as urgent

Exam Mapping

MCCQE

- clinical presentation approach
- differential diagnosis
- investigation selection
- initial management and disposition

MCAT

- organ-system mechanism
- foundational physiology
- pathophysiology vocabulary
- data interpretation from clinical context

USMLE Step 1

- pathophysiology mechanisms
- classic and atypical findings
- test interpretation
- mechanism of therapy

USMLE Step 2 CK

- diagnostic next step
- initial management
- risk stratification
- emergency recognition

FNP

- primary care differential
- initial workup
- prescribing and monitoring
- follow-up and referral

AGPCNP

- adult/geriatric differential
- comorbidity-aware workup
- medication safety
- follow-up thresholds

PMHNP

- medical mimic screening
- mental status impact
- medication/substance contributors
- safety escalation

Respiratory Therapy

- respiratory red flags if present
- oxygenation impact
- ABG relevance when unstable
- escalation communication

Learning Assets

Developmental Delay: presentation approachBuild the first-pass problem representation and acuity screen.Developmental Delay: differential diagnosisSeparate life threats, common causes, and exam distractors.Developmental Delay: investigationsChoose tests based on pretest probability, acuity, and patient safety.Developmental Delay: management prioritiesPick the next safest action and disposition.

Flashcards

What is the first safety screen in developmental delay?developmental regression; seizures; loss of milestones
Name three high-yield causes of developmental delay.global developmental delay; autism spectrum disorder; hearing/vision impairment
Which investigation anchors the initial developmental delay workup?standardized developmental screening

Practice Questions And Cases

A learner is evaluating a patient with developmental delay. Which finding should most strongly shift the next step toward urgent escalation?

Create a problem representation, rank the differential, choose the first investigation, and state the immediate management priority.

Image Recommendations

- Developmental Delay differential diagnosis flowchart
- Developmental Delay red-flag triage checklist
- Developmental Delay investigation pathway diagram
- Developmental Delay management-priority algorithm

Internal Links

Symptom page Differential page Investigation page Management page Fever Rash Limp