1. Which is the most common cause of headache among the following ?
a. Migraine
b. Cluster
c. Idiopathic stabbing
d. Exertional
2. Which is the least common cause of headache among the following ?
a. Migraine
b. Cluster
c. Idiopathic stabbing
d. Exertional
a. Migraine
b. Cluster
c. Idiopathic stabbing
d. Exertional
2. Which is the least common cause of headache among the following ?
a. Migraine
b. Cluster
c. Idiopathic stabbing
d. Exertional
ANSWER: