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.
These conditions may be a cause or symptom of Sleep or be a condition for which you may be at increased risk. Headache Headaches can be divided into two categories: primary headaches and secondary headaches. Migraine headaches, tension headaches,...learn more Â». In This Article. Headache Article Headache definition and facts.