Context: Breakthrough pain is transitory acute pain that comes on suddenly and is not alleviated by the patient's normal pain management. It is common in cancer patients who often have background pain that is generally well-controlled by medications, but who also sometimes experience bouts of severe pain that from time to time "breaks through" the medication. The characteristics of breakthrough cancer pain vary from person to person and according to the cause. Management of breakthrough pain can entail intensive use of opioids, including fentanyl.

Question: What is the term for pain which is acute and note alleviated by normal pain management?
Answer: Breakthrough

Question: How do cancer patients usually control their background pain?
Answer: medications

Question: Who is breakthrough pain common among?
Answer: cancer patients

Question: What class of medication is fentanyl an example of?
Answer: opioids

Question: What activity in relation to breakthrough pain requires heavy use of opiods?
Answer: Management

Question: What is acute transitory pain also known as?
Answer: Unanswerable

Question: What does management of acute transitory pain entail?
Answer: Unanswerable

Question: How does acute transitory pain come on?
Answer: Unanswerable