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N
Moderate Evidence

Red Flags in Assessment

Warning signs that an assessment may not be thorough or reliable, and what to do if you have concerns about your child's diagnosis.

Why quality matters

Poor-quality assessment can lead to wrong diagnoses - either missing a condition that's present, or diagnosing one that isn't. Both have significant consequences.

A missed diagnosis means delayed support. A wrong diagnosis can lead to inappropriate treatment, misunderstanding, and missed exploration of the actual cause.

Major red flags

Very short assessment
Diagnosis made in a single brief appointment without comprehensive history.

Quality assessment takes time. For autism, expect several hours minimum. ADHD should also involve thorough history-taking.

What to expect instead: Full assessment typically involves 2+ hours of clinical time, often across multiple sessions.

No school input
Diagnosis based only on parent report with no information from school.

NICE guidelines explicitly require multi-setting evidence for both ADHD and autism. School observations are essential.

What to expect instead: Clinician should request questionnaires, reports, or direct contact with school.

Single test as proof
Diagnosis based solely on one questionnaire score or observation tool.

No single test diagnoses ADHD or autism. Tools like ADOS-2 or rating scales are part of assessment, not the whole assessment.

What to expect instead: Multiple sources of information should be integrated.

No developmental history
Clinician didn't ask about early development, pregnancy, milestones.

Neurodevelopmental conditions are present from early childhood. History is crucial for accurate diagnosis.

What to expect instead: Expect detailed questions about early years, development, and family history.

Diagnosis before assessment
Feeling that the conclusion was reached before the assessment properly happened.

Assessment should be open-minded. The clinician should gather information before forming conclusions.

What to expect instead: Questions should explore possibilities, not confirm predetermined conclusions.

No consideration of alternatives
No discussion of what else might explain the difficulties.

Good assessment considers differential diagnosis. Other conditions can look similar.

What to expect instead: Expect discussion of whether symptoms might be explained by other conditions.

Other concerns to watch for

No written report provided

Without documentation, you can't get support from schools or services.

Report is vague or generic

Should contain specific observations and reasoning, not just general statements.

No recommendations given

Diagnosis without support recommendations misses the point.

Pressured to accept diagnosis

You should have space to ask questions and process information.

Charged for report as extra

Written report should be standard part of assessment.

Diagnosis given over video call alone

Some observations benefit from in-person assessment, especially for autism.

No opportunity to ask questions

Feedback should include time to discuss and clarify.

Immediate medication prescription without monitoring plan

ADHD medication requires proper titration and monitoring.

Signs of quality assessment
What good assessment looks like
Detailed developmental history taken (1+ hour)
Information gathered from multiple settings
Questionnaires from parent AND teacher
Direct observation/interaction with child
Screening for co-occurring conditions
Time taken to explain the diagnosis
Written report with clear reasoning
Specific, individualised recommendations
Opportunity to ask questions
Follow-up offered or signposted

Questions that reveal quality

These questions can help you assess whether an assessment was thorough.

"What information did you use to reach this diagnosis?"

Good answer

References multiple sources: parent interview, school input, observation, history.

Concerning

Only mentions one source or is vague about evidence.

"What other conditions did you consider?"

Good answer

Names specific alternatives considered and explains why ruled out.

Concerning

Didn't consider alternatives or can't explain the reasoning.

"Can you explain why it's X and not Y?"

Good answer

Clear explanation of the distinguishing features observed.

Concerning

Unable to differentiate or dismissive of the question.

"What support do you recommend?"

Good answer

Specific recommendations tailored to your child's profile.

Concerning

Generic advice or no recommendations.

What to do if you have concerns

Before accepting diagnosis
  • Ask about the reasoning behind the conclusion
  • Ask what alternatives were considered
  • Request time to process before deciding next steps
  • Ask for a written report if not offered
After diagnosis you're unsure about
  • Request a copy of the full report
  • Ask for clarification of anything unclear
  • Discuss concerns with your GP
  • Consider a second opinion if significant doubts
If you want a second opinion
  • You have the right to seek a second opinion
  • Can request NHS re-assessment (may face waiting lists)
  • Private assessment is an option (ensure quality)
  • Take all previous reports to new clinician

Choosing private assessment

Private assessment can offer shorter waits, but quality varies. Check for:

Clinician is appropriately qualified

Registered with appropriate professional body (GMC, HCPC, NMC). Check registration.

Experience with the condition

Specialist experience in ADHD/autism, ideally in children.

Clear about what's included

Know upfront what the fee covers - school contact? Report? Follow-up?

Multi-source information

Should still require school/teacher input. Be wary if this is skipped.

Uses standard tools

Should use recognised assessment tools, not just clinical opinion.

Written report included

Comprehensive report should be part of the package, not an extra fee.

Will be accepted by NHS

Check if NHS will accept the diagnosis for ongoing care.

The key insight

You have the right to question and understand. A diagnosis that affects your child's life should be explainable. Good clinicians welcome questions and can clearly explain their reasoning.

Trust your instincts. If something feels rushed, incomplete, or doesn't match your knowledge of your child, it's okay to ask questions or seek a second opinion.