However, recent studies have linked depression to genetic changes in body chemistry. Other factors, such as negative family relationships, serious illness, major loss or change, and substance abuse, can cause or complicate depression. Close relatives of people with depression are sometimes more likely to develop either depression or manic-depression than the general population. Signs and Symptoms. These feelings usually appear in depression, but in a more intense and prolonged form.
Depression is one of the most treatable of all mental illnesses.
As many as 90 percent of people with depression respond well to treatment, and nearly all of those treated experience some benefit. Like many other mental illnesses, depression is usually treated with medication, psychotherapy or a combination of the two. Patients can usually see relief of their symptoms in just a few weeks. Antidepressant medications are used to correct imbalances of certain neurotransmitters. The effectiveness of antidepressant medications depends on a person's overall health, weight and metabolism, and other unique physical traits, and they are usually prescribed to fit the individual.