Pain control helps improve the patient's quality of life. Oral and facial pain can affect eating, talking, and many other activities that involve the head, neck, mouth, and throat. Most patients with head and neck cancers have pain. The doctor may ask the patient to rate the pain using a rating system.
Learner's definition of COMPREHENSION. : ability to understand. [noncount] He has not the slightest comprehension of the subject. [=he does not understand the subject at all] The students showed excellent reading/language comprehension. The war caused suffering beyond comprehension. [=suffering that is impossible to imagine]
There are two main processes in a comprehension activity: vocabulary knowledge and text comprehension. If the student does not have a good knowledge of vocabulary, he may not be able to make sense of the text. A student also cannot comprehend the text just because he knows the meaning of individual words.