For Those Around You
Recognising and Referring Autism: A Guide for General Practitioners
GPs are the most common first point of contact for adults who suspect they may be autistic. At the same time, they are often the biggest bottleneck: many only recognise childhood presentations and miss masking adults who have compensated for decades.
The NICE Guidelines 2024 explicitly recommend training for GPs in recognising autism in adults. Yet there is very little practical guidance available that goes beyond checklists and explains the neurological mechanisms behind the presentation.
This guide is aimed at general practitioners who regularly see patients with unexplained chronic fatigue, recurrent burnouts, or treatment-resistant anxiety and depression symptoms. Behind these presentations, an unrecognised autistic neurology may be at work.
The Symptom Triad: Fatigue, Sensory Sensitivity and Social Processing Differences
Three symptoms frequently co-occur in unrecognised autism in adults: chronic fatigue without identifiable cause, sensory sensitivity dismissed as "oversensitivity", and social processing differences that fit neither social phobia nor depression. The key to interpretation: these patterns are lifelong, even if they only become visible as compensatory capacity declines.
The following conversations are taken directly from the app – uncut and unedited.
User question
A patient describes chronic fatigue, sensory sensitivity and social difficulties. Could this be autism?
Autistic Mirror (Outer View/GPs)
The combination of chronic fatigue, sensory sensitivity and social difficulties can indeed point to autistic neurology - especially when these patterns have been lifelong.
Masking can intensify this presentation. Masking means the person suppresses their autistic traits and imitates neurotypical behaviour - often unconsciously since childhood. This costs enormous energy and leads to the described fatigue.
Sensory sensitivity in autistic people is not "oversensitivity" but a different kind of sensory processing. The brain filters less automatically, meaning more stimuli need to be consciously processed. In clinical settings, this is often overlooked because the person has learned to hide their overload.
Social difficulties arise through the Double Empathy Problem: autistic and non-autistic people have different communication styles - the difficulty does not lie with the autistic person alone, but in the meeting of both styles.
Standard approaches like CBT can be counterproductive with masking autistic clients. The person may need more structure, longer processing time, and concrete rather than abstract questions. "How do you feel?" can fall flat with alexithymia - the difficulty in recognising emotions that many autistic people experience.
A diagnostic assessment by a service specialising in autistic adults (particularly masking presentations) would be advisable. Standard diagnostics frequently miss late-identified individuals.
This response is from Autistic Mirror. You can ask your own questions - about your situation.
Differential Diagnosis: Depression, Social Phobia or Autism?
The biggest diagnostic challenge: autism overlaps with depression, social phobia and personality disorders - and frequently co-exists with them. The decisive difference lies not in the symptoms themselves, but in their quality and temporal course.
User question
How do I distinguish autism from depression, social phobia or personality disorders in practice?
Autistic Mirror (Outer View/GPs)
Depression vs. autism: Depression shows an episodic course - there was a time "before". Autism has been present since early childhood, even if masked. Anhedonia in depression means things that once brought joy no longer do. In autism, special interests usually persist even during depressive episodes. Social withdrawal differs in quality: in depression it involves loss ("I want to but I can't"), in autism it is often relieving ("Finally, peace").
Social phobia vs. autism: Social phobia is anxiety-based - the person theoretically knows how social interaction works but fears negative evaluation. Autistic social difficulties are processing-based - implicit rules are not automatically decoded. A practical test: does social interaction improve with clear, explicit rules? That suggests autism. In social phobia, the anxiety persists despite clarity.
Personality disorders vs. autism: Borderline is often confused with autistic overload and masking. The difference: borderline emotional regulation improves in stable relationships. Autistic regulation difficulties are context-dependent - sensory environment, predictability, demand density. Identity diffusion in borderline differs from autistic masking: those with borderline often do not know who they are. Masking autistic people know, but cannot safely show it.
Comorbidities: Autism plus depression/anxiety/trauma is common. The autistic foundation remains beneath the comorbid symptoms. Trauma responses in autistic people often show atypical presentation - sensory flashbacks rather than images, altered sensory thresholds rather than classical hypervigilance.
The most important question in differential diagnosis: does autism explain the presentation more comprehensively and with fewer assumptions? Then it is probably autism - possibly with comorbidities.
Raising the Suspicion
Many doctors hesitate to voice a suspicion of autism - for fear of stigmatisation. Yet most late-identified adults report that the diagnosis was not a burden but a liberation: finally an explanation for a lifetime of effort. The language in which the suspicion is framed makes the difference.
User question
How do I raise a suspicion of autism with adult patients without stigmatising them?
Autistic Mirror (Outer View/GPs)
Rather than "I suspect autism", you can name the observed patterns: "I notice you describe significant fatigue after social situations" or "You describe in great detail how exhausting everyday interactions are for you."
Then bridge: "There are neurological processing differences that can explain such patterns. A diagnostic assessment could bring clarity - not as a stigma, but as an explanation for your experiences."
Standard screenings like the AQ or RAADS-R can produce false negatives in masking individuals. The person has learned to answer "correctly". Biographical details are more informative: what was school really like? Were there special interests disguised as "hobbies"? How much energy does a normal working day cost?
Language framing: "Neurological diversity" rather than "disorder". "Autistic processing" rather than "symptoms". Word choice signals: this is about understanding, not pathologisation.
Referral Pathways and Waiting Times
Even when suspicion exists, the diagnostic infrastructure for adults is thin. Waiting times of one to three years are not uncommon. GPs can still play a decisive role: through correct referral and support during the waiting period.
User question
Where do I refer for suspected autism - and how long does diagnosis currently take?
Autistic Mirror (Outer View/GPs)
Adults: Psychiatric outpatient clinics with autism services, autism clinics at university hospitals, specialised psychiatrists or psychologists, autism therapy centres offering adult diagnostics.
Waiting times vary significantly by region. For adults: often 6 months to 2 years, in some regions up to 3 years. Private practices have shorter waits, but costs (£800-£2000) are not always covered.
The diagnostic process takes several appointments over 2-6 months. Standard is 3-5 sessions of 1-2 hours plus testing.
Practical tip: Register on multiple waiting lists simultaneously. Some services offer preliminary conversations to assess urgency.
Autistic Burnout vs. Chronic Fatigue
One of the most common misclassifications in general practice: patients with chronic fatigue that does not respond to treatment. Behind the presentation may lie autistic burnout - an independent neurological exhaustion syndrome that differs from ME/CFS but overlaps considerably with it.
User question
What should I know about autistic burnout that presents as chronic fatigue?
Autistic Mirror (Outer View/GPs)
Autistic burnout and Chronic Fatigue Syndrome (ME/CFS) have significant overlaps - both in presentation and possibly in underlying mechanisms.
Post-Exertional Malaise (PEM) is the core symptom of ME/CFS. In autistic burnout, a similar phenomenon occurs: after social interaction, sensory overload, or masking, disproportionate exhaustion follows. The difference: in ME/CFS it is primarily energetic, in autistic burnout primarily neurological.
Symptom overlap: cognitive dysfunction ("brain fog"), orthostatic intolerance, sensory hypersensitivity, fatigue that does not improve with rest, loss of abilities that were previously automatic.
Autistic Inertia intensifies dramatically during burnout - the neurological difficulty in initiating or switching actions. During burnout, this can mean being unable to get up for hours despite a full bladder. From the outside, this looks like depression, but it is a different mechanism.
For practical differentiation: ME/CFS usually has a definable onset (often post-infection). Autistic burnout develops gradually through cumulative overload. ME/CFS worsening follows primarily physical/cognitive exertion. Autistic burnout worsens primarily through sensory/social overload and masking.
Both conditions can co-exist. Treatment approaches partially overlap (pacing, reducing demands), but autistic burnout additionally requires: reduction of masking pressure, sensory adaptations, and acceptance of autistic ways of being.
Autistic Mirror explains autistic neurology individually, applied to your situation. Whether for yourself, as a parent, or as a professional.
