Final answer:
Hypoalgesia refers to decreased sensitivity to pain. It can be caused by medications or medical conditions.
Step-by-step explanation:
Decreased sensitivity to pain is referred to as hypoalgesia. It is the opposite of hyperalgesia, which is an increased sensitivity to pain. Hypoalgesia can be caused by certain medications or medical conditions. For example, local anesthetics can induce hypoalgesia by blocking the transmission of pain signals.