Being in pain is quite uncomfortable for most people. Even minor pain, such as a stubbed toe or a paper cut, is unpleasant but that pain fades relatively quickly. Imagine being in pain that never fades, or that fades only to come back a few hours later. What would that do to a person? This is what people with chronic pain have to deal with every day.
According to the Integrative Pain Center of Arizona:
Chronic pain, a diagnosis including arthritis, back pain, and recurring migraines, can have a profound effect on a person’s day to day life when it goes untreated. People dealing with ongoing or long-term pain can become irritable, short-tempered, and impatient, and with good reason. Constant pain raises the focus threshold for basic functioning, which leaves the pained person with a greatly reduced ability to find solutions or workarounds to even relatively mundane problems. Something like a traffic jam, which most people would be mildly annoyed by but ultimately take in stride, could seriously throw off the rhythm of someone who is putting forth so much effort just to get through the day.