Introduction
The nervous system — brain, spinal cord, and peripheral nerves — controls every voluntary and involuntary function in the body: movement, sensation, speech, memory, consciousness, and emotion. Neurological conditions are among the leading causes of disability and death worldwide.
This hub is the central navigation point for all PatientGuide neurology content. Whether you are looking for emergency recognition of stroke, understanding a diagnosis of Parkinson’s disease or multiple sclerosis, navigating memory concerns, or learning to manage epilepsy — this is the starting point.
The brain is shaped by genetics and ageing, but also by modifiable factors: blood pressure, sleep, physical activity, metabolic health, and cognitive engagement. Many of the most disabling neurological conditions are meaningfully preventable or slowed.
Emergency Neurological Symptoms
Some neurological symptoms require immediate emergency response.
Call emergency services immediately for:
- Sudden face drooping, arm weakness, or speech difficulty — stroke signs. Use FAST (Face, Arms, Speech, Time).
- A sudden, severe “thunderclap” headache unlike any previous headache — possible subarachnoid haemorrhage.
- Sudden loss of vision in one or both eyes.
- A seizure lasting more than 5 minutes.
- Sudden unexplained loss of consciousness.
- New sudden weakness, numbness, or paralysis.
Recognising Stroke — FAST Guide · TIA Warning Signs · Seizures — First Aid
Memory and Cognition
Memory and cognitive function sit at the core of how we experience the world. Decline can be a symptom of many conditions — some reversible, some progressive.
- Dementia: Early Signs, Causes, and Prevention — types (Alzheimer’s, vascular, Lewy body, frontotemporal), risk factors, prevention evidence, and when to seek help
- Alzheimer’s Disease: Symptoms, Diagnosis, and Treatment — the most common dementia: early symptoms, risk factors, biomarkers, current treatments, and caregiver considerations
- Alzheimer’s Prevention and Exercise — the role of physical activity as one of the strongest known strategies for reducing Alzheimer’s risk
- Can a Blood Test Predict When Alzheimer’s Symptoms Will Begin? — plasma p-tau217 biomarkers and what they mean for early diagnosis
- Mild Cognitive Impairment (MCI) — the intermediate state between normal ageing and dementia: recognition, risk, and what helps
- Cognitive Testing and Memory Assessment — how doctors assess memory and thinking: from GP screening to specialist evaluation
- Delirium vs Dementia: How to Tell the Difference — acute confusion (delirium) is an emergency; distinguishing it from progressive dementia is critical
See also: Brain Health Hub — focused coverage of brain health, vascular risk, and cognition with sleep and prevention emphasis.
Stroke and Vascular Neurology
Stroke is the second leading cause of death worldwide and the leading cause of adult-acquired disability. Most strokes are preventable.
- Stroke — Symptoms, Emergency Response, and Treatment — causes, types (ischaemic vs haemorrhagic), what happens during a stroke event, and treatment windows
- Recognising Stroke — FAST Guide — practical identification using the FAST criteria; when to call emergency services
- Stroke Prevention — How to Reduce Your Risk — the modifiable risk factors that account for most strokes, and evidence-based strategies for reducing them
- Transient Ischaemic Attack (TIA) — Warning Signs — the warning stroke: identical symptoms that resolve fully, but stroke risk is highest in the days after; same-day assessment is essential
Vascular risk links: High Blood Pressure · Atrial Fibrillation · Cardiovascular Risk Assessment · Heart & Circulation Hub
Movement Disorders
Movement disorders affect the smooth coordination and control of voluntary movement, caused primarily by dysfunction in the brain’s basal ganglia circuits.
- Parkinson’s Disease: Symptoms, Diagnosis, and Treatment — resting tremor, bradykinesia, rigidity; levodopa, dopamine agonists, and deep brain stimulation; non-motor features including sleep and cognition; evidence on exercise
- Huntington’s Disease — the hereditary neurological condition caused by a CAG repeat expansion: progressive motor, cognitive, and psychiatric decline
- Gene Therapy for Huntington’s Disease — early trial results and what they mean for disease modification
Autoimmune and Demyelinating Disease
- Multiple Sclerosis (MS): Symptoms, Diagnosis, and Treatment — optic neuritis, fatigue, relapsing-remitting and progressive forms, MRI, disease-modifying therapies (DMTs), and living well with MS
Seizure Disorders
- Epilepsy: Seizures, Diagnosis, Treatment, and Living Safely — seizure types (focal, generalised), EEG and MRI, antiseizure medications, triggers, surgery, driving regulations, SUDEP
- Seizures — First Aid Guide — what to do if someone is having a seizure, when to call emergency services
Headache Disorders
Headache is the most common neurological symptom. Migraine alone affects approximately 15% of the global population and is among the leading causes of disability worldwide.
- Migraine: Symptoms, Triggers, and Treatment — what migraine is, aura, the four phases of an attack, common triggers, acute treatment (triptans, gepants), preventive options (CGRP monoclonal antibodies, oral preventives), and red flags requiring emergency assessment
Neurological Symptoms
Symptoms can be the entry point for neurological concern. These guides address common presenting problems.
- Dizziness: When to Worry — distinguishing benign causes from neurological red flags; dizziness can also occur as vestibular migraine
- Syncope and Fainting: Causes, Warning Signs, and When to Seek Help — vasovagal syncope, orthostatic hypotension, and cardiac causes; how to distinguish syncope from seizure
- Delirium vs Dementia: How to Tell the Difference — sudden confusion in an older person is a medical emergency until proven otherwise
- Health Anxiety: Symptoms, Reassurance Loops, and Treatment — health anxiety frequently attaches to neurological concerns such as headaches, dizziness, numbness, or tingling. This can amplify distress around neurological symptoms significantly. However, new, progressive, or clearly changing neurological signs still warrant medical assessment — health anxiety does not confer immunity to neurological disease.
Key Shared Risk Factors
Many neurological conditions share the same modifiable drivers:
| Risk Factor | Most Relevant Conditions |
|---|---|
| High blood pressure | Stroke, vascular dementia |
| Poor sleep | Dementia, Parkinson’s disease, seizure threshold, cognitive decline |
| Physical inactivity | Stroke, dementia, Parkinson’s progression |
| Diabetes | Stroke, vascular dementia, peripheral neuropathy |
| Smoking | Stroke, vascular dementia |
| Atrial fibrillation | Stroke (5× increased risk) |
| Head injury history | Dementia, post-traumatic epilepsy |
Managing these factors is among the highest-yield actions for neurological health across the lifespan.
Related Hubs
- Brain Health Hub — in-depth focus on stroke, dementia, sleep and cognitive health, vascular risk
- Sleep Health Hub — sleep disorders and the sleep–neurology interface: insomnia, sleep apnoea, restless legs
- Heart & Circulation Hub — vascular health, hypertension, atrial fibrillation, and cardiovascular risk
- Diabetes Hub — metabolic drivers that affect neurological risk: neuropathy, vascular dementia, stroke risk · Diabetic Neuropathy and Nerve Damage
- Mental Health Toolkit — depression and anxiety are extremely common in neurological conditions including Parkinson’s, MS, and epilepsy
Further Reading
- WHO — Neurological disorders: public health challenges
- Lancet Neurology — peer-reviewed clinical neurology research
- Dementia Prevention — Lancet Commission 2024 — the evidence on 14 modifiable risk factors
- Parkinson’s Foundation — education, research, and support
- MS Society UK · MS Australia
- Epilepsy Foundation (USA) · Epilepsy Action (UK)
Educational only; not a substitute for professional medical advice. For symptoms that concern you, speak with your doctor. For sudden severe symptoms, call emergency services immediately.