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Neurology clinical presentation

Headache: Investigations

Headache is a high-yield neurology presentation. Learners should reason from acuity and pattern recognition to a prioritized differential, targeted investigations, and first safe management steps.

Start Free QuizReview Differential

Investigations

  • neurologic exam
  • CT head for thunderclap/red flags
  • LP when SAH/meningitis remains possible
  • ESR/CRP for temporal arteritis
  • pregnancy test when applicable
  • focused neurologic exam
  • glucose and basic metabolic panel
  • urgent neuroimaging when focal deficit or red flags are present
  • medication/toxicology review

Red Flags And Exam Traps

Red flags

  • - thunderclap onset
  • - fever/neck stiffness
  • - neurologic deficit
  • - pregnancy/postpartum
  • - new headache over age 50

Common exam traps

  • - calling thunderclap migraine
  • - missing meningitis without rash
  • - forgetting pregnancy/postpartum vascular causes

Exam Mapping

MCCQE

  • - clinical presentation approach
  • - differential diagnosis
  • - investigation selection
  • - initial management and disposition

MCAT

  • - organ-system mechanism
  • - foundational physiology
  • - pathophysiology vocabulary
  • - data interpretation from clinical context

USMLE Step 1

  • - pathophysiology mechanisms
  • - classic and atypical findings
  • - test interpretation
  • - mechanism of therapy

USMLE Step 2 CK

  • - diagnostic next step
  • - initial management
  • - risk stratification
  • - emergency recognition

FNP

  • - primary care differential
  • - initial workup
  • - prescribing and monitoring
  • - follow-up and referral

AGPCNP

  • - adult/geriatric differential
  • - comorbidity-aware workup
  • - medication safety
  • - follow-up thresholds

PMHNP

  • - medical mimic screening
  • - mental status impact
  • - medication/substance contributors
  • - safety escalation

Respiratory Therapy

  • - respiratory red flags if present
  • - oxygenation impact
  • - ABG relevance when unstable
  • - escalation communication

Learning Assets

Headache: presentation approachBuild the first-pass problem representation and acuity screen.Headache: differential diagnosisSeparate life threats, common causes, and exam distractors.Headache: investigationsChoose tests based on pretest probability, acuity, and patient safety.Headache: management prioritiesPick the next safest action and disposition.

Flashcards

  • What is the first safety screen in headache?thunderclap onset; fever/neck stiffness; neurologic deficit
  • Name three high-yield causes of headache.migraine; tension headache; subarachnoid hemorrhage
  • Which investigation anchors the initial headache workup?neurologic exam

Practice Questions And Cases

A learner is evaluating a patient with headache. Which finding should most strongly shift the next step toward urgent escalation?

Create a problem representation, rank the differential, choose the first investigation, and state the immediate management priority.

Image Recommendations

  • - Headache differential diagnosis flowchart
  • - Headache red-flag triage checklist
  • - Headache investigation pathway diagram
  • - Headache management-priority algorithm

Internal Links

Symptom pageDifferential pageInvestigation pageManagement pageDizzinessSeizureWeaknessAltered Mental StatusGait Disturbance