Neurological presentations account for 10–15% of all GP consultations. Most are benign and manageable in primary care — but the stakes for missing a serious diagnosis are high. Headache, dizziness, and weakness are among the most common and most anxiety-provoking presentations. Know the red flags, act fast on strokes, and refer strategically.
Thunderclap headache
999 / A&E immediatelySudden maximal onset ("worst headache of life") — subarachnoid haemorrhage until proven otherwise
Headache + fever + neck stiffness
999 — IM Benzylpenicillin 1.2g before transferBacterial meningitis / meningoencephalitis
New headache >50 years
Urgent ESR/CRP, ophthalmology if visual symptomsGCA (temporal arteritis), intracranial pathology
Headache + papilloedema
Same-day CT headRaised ICP — tumour, venous sinus thrombosis, idiopathic intracranial HTN
Progressive headache worsening over weeks
Urgent CT/MRI referralSpace-occupying lesion
Postural headache (worse lying, better sitting)
Urgent ophthalmology + neurology referralIdiopathic intracranial hypertension (IIH) — especially obese women of childbearing age
Headache + focal neuro deficit
CT head urgentlyHaemorrhagic stroke, tumour
Headache after head trauma
CT head (NICE head injury criteria)Subdural/extradural haematoma
SNOOP4 — Secondary Headache Screening Tool
Systemic symptoms (fever, weight loss)
Neurological signs (focal deficit, papilloedema)
Onset sudden / thunderclap
Older age (new headache >50 yrs)
Progressive worsening over weeks
Postural / position-related change
Precipitated by Valsalva (cough, sneeze, exertion)
Pregnancy or postpartum
Cardiovascular
AF, anticoagulation
Hypertension
Stroke risk reduction
Drug Database
AEDs, neuropathic pain
Mental Health
Depression in neurological disease
Based on NICE CG150 (Headache), NICE CG137 (Epilepsy), ESO Stroke Guidelines 2022, NICE NG128 (Parkinson's), EAN Guidelines. Always refer to specialist for new neurological diagnosis.
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