Final Year MBBS | Neuroscience-III | Topic 6 — Acute & Chronic Headache and Migraine Across the Lifespan
AIM LEARNING CYCLE | FINAL YEAR MBBS
Student Memory Support
Topic 6 — Acute & Chronic Headache and Migraine Across the Lifespan
Neuroscience-III | KMU Curriculum | High-Yield Revision
1. High-Yield Flashcards
Tap each question to reveal the answer.
What distinguishes a primary headache from a secondary headache?
Primary headache is itself the disorder; secondary headache results from another underlying condition.
What is a thunderclap headache?
A headache reaching maximum intensity within seconds to one minute; it requires urgent evaluation for subarachnoid hemorrhage and other vascular causes.
What is the typical duration of untreated adult migraine?
4–72 hours.
Which neuropeptide is important in migraine pain signalling?
Calcitonin gene-related peptide (CGRP), released during trigeminovascular activation.
What mechanism explains typical migraine aura?
Cortical spreading depression, producing gradually developing and reversible neurological symptoms.
What is the typical duration of an individual migraine aura symptom?
Usually 5–60 minutes, with gradual development and complete reversibility.
What headache-frequency pattern characterizes chronic migraine?
At least 15 headache days/month for over three months, including at least eight days/month with migraine features, in a patient with a migraine history.
When is routine brain imaging unnecessary in a patient with migraine?
With a typical stable migraine pattern, normal neurological examination and no red flags.
Which drug class specifically treats acute migraine through 5-HT1B/1D receptors?
Triptans, for example sumatriptan.
What are three common undergraduate-level migraine preventive medications?
Propranolol, topiramate and amitriptyline, selected according to comorbidities and contraindications.
What medication-use thresholds suggest medication-overuse headache?
Triptans/combination analgesics on at least 10 days/month or simple analgesics on at least 15 days/month for over three months, with frequent headache.
How may childhood migraine differ from adult migraine?
Headache may be bilateral and shorter; pallor, vomiting, withdrawal from play and improvement after sleep can be important clues.
2. Mnemonics
Mnemonic Title: Migraine Clinical Features
POUND
Meaning: P — Pulsating pain; O — One-day duration (often 4–72 hours); U — Unilateral pain; N — Nausea/vomiting; D — Disabling severity. A memory aid for common migraine characteristics, not a substitute for diagnostic criteria.
Mnemonic Title: Headache History Essentials
OPQRST
Meaning: O — Onset; P — Provoking/relieving factors; Q — Quality; R — Region; S — Severity and associated symptoms; T — Timing, duration and progression. Add medication history and red-flag assessment.
Mnemonic Title: Migraine Lifestyle Prevention
SHAMS
Meaning: S — Regular Sleep; H — Hydration; A — Appropriate physical Activity; M — Regular Meals; S — Stress management. A practical way to remember non-pharmacological prevention.
3. Memory Tables
Common Primary Headache Disorders
| Feature | Migraine | Tension-Type | Cluster |
|---|---|---|---|
| Site | Often unilateral | Usually bilateral | Strictly unilateral orbital/temporal |
| Character | Often pulsating | Pressing/tightening | Excruciating orbital pain |
| Duration | 4–72 hours | 30 minutes to days | 15–180 minutes |
| Associated signs | Nausea, photophobia, phonophobia | No prominent nausea | Tearing, nasal congestion |
| Activity | Usually worsens pain | Usually does not worsen pain | Restlessness |
4. Rapid Revision Points — Last-Minute Revision
Must Remember:
- Most headaches are primary, but new neurological warning signs require exclusion of secondary causes.
- Thunderclap headache requires emergency evaluation even if neurological examination is normal.
- Papilledema suggests raised intracranial pressure and requires urgent assessment.
- Typical migraine is diagnosed clinically; routine imaging is unnecessary without red flags.
- Migraine with aura produces gradual, reversible neurological symptoms.
- Triptans treat acute migraine but are contraindicated in established ischemic cardiovascular disease.
- Propranolol may worsen asthma or bradycardia.
- Topiramate can cause cognitive slowing and is contraindicated for migraine prevention during pregnancy.
- Frequent acute analgesic use may worsen headache frequency through medication overuse.
- Progressive childhood headache with abnormal neurological signs requires prompt assessment and appropriate investigation.
5. Clinical Memory Hooks
Clinical Hook 1:
Sudden explosive headache reaching maximum intensity within seconds
→ Thunderclap headache → exclude subarachnoid hemorrhage urgently.
Sudden explosive headache reaching maximum intensity within seconds
→ Thunderclap headache → exclude subarachnoid hemorrhage urgently.
Clinical Hook 2:
Progressive headache with vomiting and papilledema
→ Suspect raised intracranial pressure → urgent neuroimaging.
Progressive headache with vomiting and papilledema
→ Suspect raised intracranial pressure → urgent neuroimaging.
Clinical Hook 3:
Recurrent disabling migraine despite frequent acute treatment
→ Review medication overuse → consider preventive treatment.
Recurrent disabling migraine despite frequent acute treatment
→ Review medication overuse → consider preventive treatment.
Clinical Hook 4:
Child with progressively worsening headache, morning vomiting and abnormal gait
→ Possible intracranial pathology → prompt specialist evaluation.
Child with progressively worsening headache, morning vomiting and abnormal gait
→ Possible intracranial pathology → prompt specialist evaluation.
6. Starred High-Yield Exam Points
- ⭐ Thunderclap headache: Investigate urgently for subarachnoid hemorrhage and other vascular causes.
- ⭐ Migraine aura: Cortical spreading depression produces gradually spreading, reversible neurological symptoms.
- ⭐ Chronic migraine: At least 15 headache days/month for over three months, with at least eight migraine-feature days/month.
- ⭐ Routine imaging: Not indicated for typical stable migraine with normal examination and no red flags.
- ⭐ Triptans: 5-HT1B/1D agonists; avoid in established ischemic cardiovascular disease.
- ⭐ Medication-overuse headache: Frequent acute medication use may perpetuate headache; review drug-use days and plan appropriate reduction.