Headache Flashcards
What are the symptoms of migraine ?
intense throbbing headache on one side of the head
nausea and vomiting
sensitivity to light or sound
What is aura ?
temporary warning symptoms before migraine
Aura symptoms ?
Visual disturbances
numbness or pins and needles: starting in one hand, moves up arm before affecting face, lips and tongue
Dizzy, off-balance
difficulty speaking
What drugs are used in treatment of migraines ?
5 HT1 receptor agonists ( triptan)
Ergot alkaloids rarely used:
Nsaids: tolfenamic acid ( licensed to treat acute migraine attacks)
Name all 5 HT1 receptor agonists ( triptans ) ?
Almotriptan
Eletriptan
Frovatriptan
Naratriptan
Rizatriptan
Sumatriptan ( can also treat cluster headaches)
Zolmitirptan ( can also treat cluster headaches)
What drugs are used for prophylaxis of migraine ?
- propranalol, atenolol, metoprolol, nadolol, timolol
- antiepiletic drugs: topiramate, sodium valproate, gabapentin
- tricyclic antidepressants, valproic acid
- pizotifen ( antihistamine serotonin receptor antagonist; limited value and causes weight gain
What is first and second line treatment in acute migraine attacks ?
first line: simple analgesic: better soluble and dispersible
second line: Sumatriptan: if frequent prolonged attacks despite treatment then can combine with NSAIDs
What is a particular side effect of ergotamine?
peripheral vasospasm
Patient counselling for ergotamine ?
stop if numbness or tingling of extremities occur. Avoid in cerebrovascular and cardiovascular disease
What is criteria for treatment of migraine prophylaxis ?
- suffer at least two attacks a month
- increasing frequency of headaches
- significant disability despite treatment for migraine attacks
- cannot take suitable treatment for migraine attacks
How does 5 HT1 receptor agonists work ?
Act on 5-HT 1d and 5-HT 1b present on cranial arteries and veins to cause vasoconstriction
How should triptans be taken ?
take one dose ASAP after onset, followed by a second dose at least 2 hours later ( 4 hours in naratriptan ) if migraine recurs. Do not take the second dose for the same attack
Side effects of triptans ?
Coronary vasoconstriction ( raises BP can cause ischaemia or anaphylaxis
Triptans contraindications ?
ischaemic heart disease, previous myocardial infarction, coronary vasospasm, prinzmetals angina, uncontrolled or moderate severe hypertension, peripheral vascular disease, previous stroke/TIA
Triptans shouldn’t be used for what type of migraines ?
not for hemiplegic (one side of the body goes numb ) basilar or optalmoplegic migraines ( pain around the eye, causes brief moments of blindness )