Pain is a subjective sensory and emotional experience, and understanding how it is described and assessed is essential to appropriate care. This lesson introduces pain, distinguishes common pain types, and reviews practical approaches to assessment.
Pain is defined as “an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage.” It is a subjective experience: the person experiencing pain is the primary source of information about it. In practice, clinicians often summarize this principle as “pain is whatever the client says it is.”
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What distinguishes acute pain from chronic pain?
Acute pain typically begins suddenly and usually lasts less than a month. Chronic pain typically lasts longer than three months and may be associated with long-term physical and emotional complications.
What is the difference between somatic and visceral pain?
Somatic pain arises from areas such as skin, bones, and muscles and is often localized. Visceral pain arises from internal organs and is often deep, aching, and more difficult to localize.
What is neuropathic pain, and how might it feel?
Neuropathic pain arises from nerves in the peripheral or central nervous systems. It is often described as burning, tingling, or shooting and may radiate.
How can pain be assessed when a numeric scale is not suitable?
A clinician can use a picture-based tool such as the Wong–Baker FACES scale, observe physical signs, and ask how pain affects everyday function. These approaches complement rather than replace the person's report.
How are nociception and pain different?
Nociception is the nervous system's processing of noxious stimuli. Pain is the person's subjective experience of that processing.
Quiz questions
Why is a client's self-report central to pain assessment?Answer: Pain is subjective, so the person experiencing it is the primary source of information.
Which nociception step adjusts the strength of a pain signal?Answer: Modulation
Which substance can intensify pain signaling?Answer: Substance P
What does pain threshold mean?Answer: The point at which a person perceives a stimulus as painful.
Which nursing practice can help reduce bias in pain assessment?Answer: Take each person's report seriously, regardless of identity or outward behavior.
Based on Pharmacology for Nurses by Tina Barbour-Taylor, Leah Mueller (Sabato), Donna Paris, Dorie Weaver (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.