By Dr. Lynn Bahr
© Can Stock Photo Inc./Elizabetalexa
Pain is not a symptom that exists alone. Other problems associated with pain can include fatigue, withdrawal from activity and increased need to rest, and changes in mood, including fear, depression, anxiety, irritability and stress. In humans, we know that long-term pain has a profound effect on quality of life and we might assume the same holds true for animals. Aside from the physical suffering that it causes, there are also psychological and personality effects associated with chronic pain. Read more.