The underlying causal mechanisms of migraine headaches are ______.
A) simple and well understood
B) complex, but well understood
C) simple, but not well understood
D) complex and not well understood
Correct Answer:
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Q141: Each of the following is discussed by
Q142: Migraine headaches tend to be _ intensity,
Q143: People with lower SES are _ likely
Q144: Psychological factors play a role in _
Q145: Muscle-tension headaches tend to come on _
Q147: Jeremiah has a dull, steady pain on
Q148: About _ percent of people in the
Q149: Changes in blood flow to the brain
Q150: A neurotransmitter, imbalances of which have been
Q151: Migraine headaches may be affected by imbalances
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