Neurology 2.8 Flashcards
What is the main triad of a migraine?
- incapacitating (disability)
- nausea/emesis (nausea)
- light/sound sensitivity (photophobia)
What else are patients with migraines at risk for if they smoke?
9x’s increased risk of stroke
What else are patients with migraines at risk for if they take oral contraceptives?
7x’s increased risk of stroke
What is the relationship between serotonin and migraines?
- low serotonin levels in migraine sufferers
- serotonin is a vasoconstrictor as one of its functions
- triptans (functionally similar to serotonin) blocks inflammatory chemicals in meninges and inhibits pain transmission
What is a “modulator zone”?
active zone in the dorsal raphe nucleus of the midbrain during a migraine attack
What is allodynia?
painful reaction to otherwise non painful stimuli; develops as migraine attacks progress
What is central sensitization?
central amplification of pain response and threshold in migraines; chronic
What is neuronal sensitization?
process where neurons become increasingly responsive to pain stimuli in chronic migraines
What are the results of sensitization in migraines?
- decreased response threshold
- increased response magnitude
- expansion of receptive fields
What categorizes migraines as chronic or transformed migraine?
progressive form of migraine intermittent attacks, eventually to 15+ days/month
What is the most effective treatment for cluster headaches?
oxygen; most patients with cluster headaches are smokers
also, triptans and occipital nerve blocks
What is the typical presentation of cluster headaches?
- watery eye
- drooping eye
- runny nose
- male
Are most patients who present with migraine/headache symptoms primary or secondary in etiology?
primary; >99%
Do brain tumors typically present with headaches?
No; explains why imaging is not always typical for a headache patient unless there is neurological deficit
When should a physician consider an intracranial hematoma as a potential diagnosis?
- recent trauma with a cute changes in mental status
- headache
- focal neurological deficit