Depression

“Depression is a medical illness that causes a persistent feeling of sadness and loss of interest. Depression can cause physical symptoms, too.

Also called major depression, major depressive disorder and clinical depression, it affects how you feel, think and behave. Depression can lead to a variety of emotional and physical problems. You may have trouble doing normal day-to-day activities, and depression may make you feel as if life isn't worth living.
 
More than just a bout of the blues, depression isn't a weakness, nor is it something that you can simply "snap out" of. Depression is a chronic illness that usually requires long-term treatment, like diabetes or high blood pressure. But don't get discouraged. Most people with depression feel better with medication, psychological counseling or other treatment.
 
Interpersonal therapy is a short-term therapy utilized in the treatment of depression. Focus of this treatment approach is usually on an individual’s social relationships, and specifically on how to improve them. It is thought that good, stable social support is imperative to a person’s overall well-being and health within this framework. When relationships falter, a person directly suffers from the negativity and unhealthiness of that relationship.
 
Therapy seeks to improve a person’s relationship skills, working on communication more effectively, expressing emotions appropriately, being properly assertive in social and occupational situations, etc."