Migraine Flashcards
What is thought to be the three patho points of migraines?
Sensitized Neurons
Vasodilation
Triggers (That trigger inflammation)
What are triptans?
Selective serotonin agonists that cause vasoconstriction
WHat are NSAIDs?
Help with the inflammation
What is the role of anti-CGRP medicaitons?
Prevent/reduce vasodilation
What is the central role of migraine therapy?
Early treatement to nip it in the bud leading to better efficacy
What generally occurs in about 30% of migraine patients?
Aura
What are the three types of aura?
Visual
Sensory
Speech
What is a visual Aura?
Flicker bright lines, blind spots, lightning bolts
What is a sensory disturbance?
Tingling numbness pins and needles
What is speech disturbances?
Difficulty finding the words
What are some migraine triggers?
Stress
Foods
Alcohol
Caffeine withdrawal
Dehydration
What is the POUND acronym>
What does the P stand for in Pound?
Pulsatile quality of headache
What does the O stand for in pound?
One day duration
What does the U stand for in pound?
Unilateral headache
What is generally the first step in Acute migraine management?
NSAID
What are the NSAIDs we generally go for in acute migraine management?
Ibuprofen liquid gels
Naproxen Sodium
Diclofenac Potassium (Not common because it is expensive)
What is an important point to taking NSAIDs for management of migraine?
Need to take on an empty stomach
What is the second step for management of a migraine?
Generally we lean towards triptans as they have better response in patents as compared to NSAIDs alone
What are the slow acting triptans?
Naratriptans, frovatriptan
When should triptans be taken for migraines?
WE want to start is at the earliest onset
How many trials of triptans should we try?
We should try a triptan for 3 separate migraines and if it doesn’t do the trick we can switch (Generally 3 different triptans thoug)
What are triptans?
Potent vasoconstrictors and serotonin agonist
What can be added to triptans to possible help with migraines?
Could try acetaminophen. NSAID or metoclopramide
What is metoclopramide?
This is a dopamine antagonist which will increase GI motility
What is the fastest acting triptan therapy?
Sumatriptan
What are the other effects of metoclopramide other then increased GI motility?
Decreased Nausea
Why might someone switch from a faster acting triptan to a slower acting one?
Tolerability
What may be combined with Triptans/NSAIDs to helP/
Caffeine, metoclopramide, or caffeine
Wat is generally avoided in migraines?
Opioids and barbiturates
Who should be ocnsidered for migraine prophylaxis?
Anyone who is refractory
What is another alternative that patients may start prior to all the other therapies?
DHE nasal spray
Why are tylenol #3 no recommended for migraines?
Generally because the caffeine and acetaminophen dose are not high enough to be therapeutic
Too we have unpredictable metabolism of codeine
What are the contraindications of triptans?
Cardiovascular Disease
What medications are contraindicated with triptans?
24 hours within DHE due to additive coronary vasospasm, DO NOT COMBINE with triptans
MAOIs
What is a side effect of triptans?
Nausea
Why cant we use odansetron with triptans?
Because they work the opposite where Odnasetron is a serotonin antagonist and tripatns area serotonin agonsit
What are the routes of administration for triptans?
Oral, injeciton, nasal, dissolve
What is the fastest onset triptan?
Subcut (10), Nasal (10-15)
What are the two Nasal route of administration triptans
Suma, zolmi
What are the two long acting onset triptans?
Nara, Frova
What is the general onset of oral triptans?
30-60 minutes
When is the best efficacy of tripans achieved?
2 hours
What is another antiemetic agent that could be used?
DOmperidone
What is the issue with Domperidone?
Lots of side effects with respect to QT prolongation and Torsades de pointes possibly
What are the side effects of metoclopramide?
May cause shaking of hands because it is a dopamine blocker`
What are the max days per month that you can use Triptans?
9
What are the max days per month that you should use opioids?
9
What are the max days per month that you should use NSAIDS or acetaminophen?
14
What may be a fix for menstrual migraine?
continuous combined contraceptives therapy, but this may lead to increased risk of stroke/ VTE
How else may be choose to treat menstrual migraine?
Naproxen, Naratriptan, Frovatripan of estradiaiol gel 1 week prior
What are the two CGRP receptor antagonists we should know?
Ubrogepants and Atogepant
What is Ubrogepant?
Used for the TREATMENT of Migraine 50-100mg stat
What is the usage of Atogepant?
Used for the prevention dose of migraine 10-60mg
What is the dosage of ubrogepant?
50-100mg
What is special about the CGRP receptor antagonists?
They are not contraindicated in CV disease, and low risk of medicaiton overuse headache
What are the AE of CGRP receptor antagonists?
Nausea, somnolence
What are the side effects of triptans?
Nausea, S-syndrome, chest tightness, poor tase
Who should think about getting migraine prophylaxis?
Depends on severity
Whether they are disabling
Difficult to treat attacks
What migraine prophylaxis numbers should we know?
6 migraine days for minor migraines
3 migraine days for severe disabling attack
How should we setup an adequate trial of Migraine prophylaxis?
Headache Diary
Start migraine prevention nat low dose
Dose increase gradually over 1-2 weeks
Remain at dose for 8-12 weeks
Assess and decide to whether to continue increase the dose or taper
What are reasonable goal of therapy with migraine prophylaxis?
50% decrease in frequency or severity (Helps us to assess to help patients assess the expectations of migraines)
If we do not achieve a 50% reduction of less severe headache what might we do;
Increase therapy
What is important to educate patients with respect to prophylaxis?
Effectiveness takes time and tolerability
How do we advise on side effects?
OTC saliva subs for example for TCA usage
Which drugs have the best efficacy data for migraines?
Amitrptyline
Propranolol
Metoprolol
Topiramte
Which drugs have the fewest adverse reactions?
Candesartan
Magnesium
Riboflavin
What co-morbidities may we also tailor treatment for migraines?
Smoking, insomnia, chronic pain, hypertension, depression/anxiety
What is the target dose of propranolol?
80mg BID or 160mg LA daily
What is the target dose of metoprolol?
100mg BID or 200mg
What are the three Beta blocker medications used for migraine proph?
Propranolol, metoprolol, timolol
What is the working theory for how beta blockers help with migraines?
If we have a bit of vasodilation already occurring a bit, when we have inflammation wave go through we wont have as much dilation occurring. Little less room for vasodilation
What are the adverse reactions with beta blockers?
Decreased heart rate, dizziness, exercise fatique
What are the 2 TCAs that we are focused on?
Amitriptyline and Nortriptyline
What are the theories of TCAs for migraines
May decrease serotonin receptors around which may decrease migraines from occuring
May be numbing the pain of the migraine a bit more
Which of the TCAs are more likely to cause drowsiness?
Amitriptyline because it is a tertiary amine and is more sedating.
Which of the TCAs have the smoking cessation indications?
Nortriptyline
What is the target dose of amitriptyline for migraine prophylaxis?
75mg HS
What are the two antoconvulsants?
Topiramate and divalproex
What is the issue with the anticonvulsants?
Lots of drowsiness occurs with them
What is the target dose of topiramate?
50mg BID
What are the Ace/ARb medications indicated for migraines?
Lisinopril and candesartan
What is the target dose of candesartan?
16mg
What should we counsel with Ace/Arb medications?
Orthostatic hypotension, dizziness, cough, renal function, and electrolytes
Do ace/arb cause increase or decrease in potassium?
increases
When on an ace/arb therapy what percentage of patients experience dizzines?
1/3
What are the SNRIs that are used for prophylaxis?
Venlafaxine, duloxetine
What are the side effects of SNRIs?
Increase agitation, headache prevalence, insomnia, sexual dysfunction
What is the issue with SNRIs and stopping them?
FINISH
What is the FINISH acronym stand for?
Flu like symptoms
Insomnia
Nausea
Imbalance
Sensory disturbances
Hyper arousal
What can happen if you miss a dose of venlafaxine?
You may have more issues with throwing up
Which SNRIs may not have as bad as the other
Duloxetine
What are the non-DHPCCB medications used?
Flunarizien, verapamil
What are the side effects of verapamil?
Constipation and decreased heart rate
What is pizotifen?
Serotonin antagonist, but may help with prophylaxis by blocking serotonin receptors for the attack to propigate
What is the target dosing of magnesium oxide?
500mg po daily (elemental)
What is the magnesium citrate target dose?
300mg PO BID
What is the riboflavin target dose?
400mg po daily
What is the issue with magnesium excess?
diarrhea
What is the riboflavin DRI?
1mg
What are the side effects of riboflavin?
None really, just peeing alot out of it and turing urine neon yellow
What is CGRP?
Inflammatory mediator that increases propigation of migraines
What is memantine?
Alzheimers treatment, isnt that well studied
What is a major drug interaction with rizatriptan?
Propranolol which increases rizatriptan metabolism
Why do we worry about rizatriptan and propranolol?
Too much vasoconstriction?
What is the downside with giving MAB every 4 months
May have resistance issues in the trough levels
What is the onset of the prophylaxis options with respect to the biologics?
Days
What are the adverse effects of the MAB?
Hypertension
What are the red flags for acute headache requiring emergency
What are tension headaches?
Pressing or tightening pain mild to moderate intensity
Take some time to review cluster headaches
Take some time to review tension type headaches
What are cluster headaches?
Stabbing, nonpulsating pain severe to excruciating
What is the onset of frenumizamab?
Days to 6 months
What is the definition of medication overuse headache?
> 15 days per month