Causes of the flu. The flu is caused by influenza virus types A, B, and C. Both type A and type B flu viruses are responsible for the seasonal outbreaks of flu. Type A flu viruses are found in many different animals, including ducks, chickens, pigs, and horses. Influenza B viruses circulate widely only among humans.
Find healthy ways to manage stress. Consider healthy, stress-reducing activities such as meditation, exercising or talking things out with friends or family. Keep in mind that unhealthy behaviors develop over time and can be difficult to change. Don't take on too much at once.
Reduce stress in your life. Negative feelings like depression, anxiety, stress, and anger can increase the body's sensitivity to pain. By learning to take control of stress, you may find some relief from chronic pain. Several techniques can help reduce stress and promote relaxation.