n. The verb in a verb phrase that expresses the action, state, or relation and is not an auxiliary verb. In the sentence, The bird has flown, fly is the main verb.
Types of Headache. This medical symptom information shows the various types of Headache, and other related symptoms or conditions, including their causes and diagnosis. Throbbing headache. Persistent headache. Severe headache. Migraine. Aura. Forehead pain.
1 The most common form of primary headache is the tension-type headache. 2  A wide variety of conditions can cause secondary headaches, ranging from hangovers to brain tumors. 3  The most common form of secondary headache is the rebound headache (medication-overuse headache).igraines 9. Migraine is the second most common form of primary headache and has been ranked as the seventh-highest specific cause of disability worldwide. 5 They can last for any amount of time between a few hours and 2-3 days.