The Causes and Subtypes of Major Depression
The American Psychiatric Association defines major depression as a medical illness that has negatively affects on how a patient thinks, acts, and feels. Depression can affect patients very differently. For instance, it’s typically diagnosed via a combination of symptoms that can include social withdrawal, mental and physical fatigue, loss of or increased appetite, sleep issues, extreme sadness, apathy towards hobbies and activities the patient was once passionate about, harmful or suicidal thoughts, and mood swings, which all impeded daily life (i.e., work, school personal relationships, etc.). Just as symptoms of depression can vary, so can the various causes of depression, for instance it may stem from: Genetics (or if depression exists among parents, siblings, or offspring). Chronic illness (i.e., cancer, rheumatoid arthritis, osteoarthritis, fibromyalgia). Socioeconomic reasons (i.e., a job loss). Socio-personal factors (i.e., death of a loved one). However, despite many correlative symptoms between patients, depression is a complicated illness that occurs in many forms, or subtypes that fall under these medical classifications: 1. Seasonal affective disorder Seasonal affective disorder, or SAD, often occurs with seasonal change. According to the National Institute of Mental Health, SAD is most prevalent during the late fall and winter when sunlight (or naturally-sourced vitamin D) is limited.