Prepare for the Pharmacology IV – Headache Therapeutics Test. Review the therapeutic approaches, tackle multiple-choice questions with explanations, and boost your test-taking confidence. Ace your exam with precision!

Multiple Choice

Which acute migraine therapy is associated with driving impairment and notable CNS effects?

Driving impairment with acute migraine therapy comes from central nervous system effects rather than just pain relief. Lasmiditan fits this pattern because it is a selective 5-HT1F receptor agonist that acts in the brain to blunt trigeminal nociception, providing acute relief without causing vasoconstriction. However, it readily penetrates the CNS, so common side effects include dizziness, drowsiness, fatigue, and cognitive slowing. These CNS effects can impair activities requiring alertness, such as driving, which is why labeling advises avoiding driving or operating heavy machinery for several hours after a dose (typically around 8 hours). Other acute migraine therapies either work mainly through vascular effects or have different side-effect profiles. Sumatriptan and dihydroergotamine cause vasoconstriction and can produce lightheadedness or chest symptoms but are not primarily noted for driving impairment due to CNS effects. Naproxen is an NSAID with GI and renal considerations and does not typically cause the pronounced CNS impairment seen with lasmiditan.

Driving impairment with acute migraine therapy comes from central nervous system effects rather than just pain relief. Lasmiditan fits this pattern because it is a selective 5-HT1F receptor agonist that acts in the brain to blunt trigeminal nociception, providing acute relief without causing vasoconstriction. However, it readily penetrates the CNS, so common side effects include dizziness, drowsiness, fatigue, and cognitive slowing. These CNS effects can impair activities requiring alertness, such as driving, which is why labeling advises avoiding driving or operating heavy machinery for several hours after a dose (typically around 8 hours).

Other acute migraine therapies either work mainly through vascular effects or have different side-effect profiles. Sumatriptan and dihydroergotamine cause vasoconstriction and can produce lightheadedness or chest symptoms but are not primarily noted for driving impairment due to CNS effects. Naproxen is an NSAID with GI and renal considerations and does not typically cause the pronounced CNS impairment seen with lasmiditan.