There are many definitions of pain. Because pain is often subjective, everyone will define and describe it in their own personal terms.

Dictionary vs. Medical Definition of Pain

The dictionary describes pain as physical suffering or discomfort caused by illness or injury. Medicine becomes very technical in its description of pain, often concentrating on the physical aspects, structures involved, and trying to determine if it is “real.” The International Association for the Study of Pain (IASP) defines pain as:

“An unpleasant sensory or emotional experience associated with actual or potential tissue damage, or described in terms of such damage.”

Pain has both physical and emotional correlates. If someone has pain, there is usually a physical cause in the body that needs to be found. Pain may also have significant emotional correlates in the brain. The processing centers in the brain for many pain signals sit next to the areas that control emotional stability. Therefore, if people have significant amounts of pain, spread of pain signals to emotional areas of the brain can easily occur, affecting mood and depression.

Pain is always subjective. It is a learned experience, and it is very individualized. A person learns what pain is through experiences related to injuries as a child and as they grow up.

Acute vs. Chronic Pain

In medicine, pain is the interpretation of certain sensory signals, generated from a variety of receptors in the body. When the sensory signals are ongoing, most people interpret these as pain, and seek treatment to relieve them. There are two primary types of pain:

• Acute pain is from definite tissue injury and will fade after the cause is identified and treated. A common example is cutting a finger – it hurts, it heals, and the pain is gone.
• Chronic pain occurs when damage causes ongoing sensory signals for long periods of time, and in some degree becomes independent of the actual tissue damage. This type of pain is difficult to stop, and often the best treatment is working on systems to manage the pain.

Understanding the complexities of pain, the body, the sensory nervous system, and the overall interactions in the body are some of the important aspects for a medical doctor who treats patients with pain. A good pain physician understands people and medicine and how all these interact, allowing them to find the causes and improve the quality of your life.