Brain and nervous system
What AI told people about 24 conditions in November 2026.
Led with the right place
72 of 90 answers
Led with the right place
22 of 29 answers
Led with the right place
23 of 30 answers
Led with the right place
27 of 31 answers
Led with the right placeNovember 2026
AI Overviews
22 of 29
AI Mode
23 of 30
ChatGPT
27 of 31
History starts when there is a second month to compare. November 2026 is the first.
Got the NHS facts right
187 of 205 answers
Got the NHS facts right
60 of 67 answers
Got the NHS facts right
66 of 69 answers
Got the NHS facts right
61 of 69 answers
Got the NHS facts rightNovember 2026
AI Overviews
60 of 67
AI Mode
66 of 69
ChatGPT
61 of 69
History starts when there is a second month to compare. November 2026 is the first.
Cited NHS or accredited sources
266 of 380 answers with sources
Cited NHS or accredited sources
85 of 147 answers with sources
Cited NHS or accredited sources
115 of 154 answers with sources
Cited NHS or accredited sources
66 of 79 answers with sources
Cited NHS or accredited sourcesNovember 2026
AI Overviews
85 of 147
AI Mode
115 of 154
ChatGPT
66 of 79
History starts when there is a second month to compare. November 2026 is the first.
Conditions
Acromegaly (pituitary)
2 answers with different advice
Meningitis
2 answers with different advice
Neurofibromatosis (NF1 and NF2)
2 answers with different advice
Brain tumours
1 answer with different advice
Head injury
1 answer with different advice
Headaches
1 answer with different advice
Migraine
1 answer with different advice
Stroke
1 answer with different advice
Transient ischaemic attack
1 answer with different advice
ADHD
No differences
Where the answers came from
Where the answers came from
Where the answers came from
Where the answers came from
On the PIF TICK list for brain and nervous system
Alzheimer’s Research UKAlzheimer’s SocietyBrainstrustCerebraChest Heart & Stroke ScotlandEncephalitis InternationalEpilepsy ActionEpilepsy SocietyGrowing DifferentMeningitis NowMikaere FoundationMotor Neurone Disease Association (MNDA)MS SocietyMultiple System Atrophy TrustOvercoming MSParkinson’s UKPituitary FoundationPoTS UK (Postural Tachycardia Syndrome)Spinal Muscular Atrophy UKThe Migraine TrustYoung Epilepsy