FAQ’s
Frequently Asked Questions
Clinical depression is a serious condition that negatively affects how a person thinks, feels, and behaves. In contrast to normal sadness, clinical depression is persistent, often interferes with a person’s ability to experience or anticipate pleasure, and significantly interferes with functioning in daily life. Untreated, symptoms can last for weeks, months, or years; and if inadequately treated, depression can lead to significant impairment, other health-related issues, and in rare cases, suicide.
A person is diagnosed with a major depression when he or she experiences at least five of the symptoms listed below for two consecutive weeks. At least one of the five symptoms must be either (1) depressed mood or (2) loss of interest or pleasure.
The first step to being diagnosed is to visit a doctor for a medical evaluation. Certain medications, and some medical conditions such as thyroid disorder, can cause similar symptoms as depression. A doctor can rule out these possibilities by conducting a physical examination, interview and lab tests. If the doctor eliminates a medical condition as a cause, he or she can implement treatment or refer the patient to a mental health professional.
Depression is twice as common among women as among men. About 20 percent of women will experience at least one episode of depression across their lifetime. Scientists are examining many potential causes for and contributing factors to women’s increased risk for depression. Biological, life cycle, hormonal and psychosocial factors unique to women may be linked to women’s higher depression rates. Researchers have shown, for example, that hormones affect brain chemistry, impacting emotions and mood.
Before adolescence, girls and boys experience depression at about the same frequency. By adolescence, however, girls become more likely to experience depression than boys. Research points to several possible reasons for this imbalance. The biological and hormonal changes that occur during puberty likely contribute to the sharp increase in rates of depression among adolescent girls. In addition, research has suggested that girls are more likely than boys to continue feeling bad after experiencing difficult situations or events, suggesting they are more prone to depression.
Women are particularly vulnerable to depression after giving birth, when hormonal and physical changes and the new responsibility of caring for a newborn can be overwhelming. Many new mothers experience a brief episode of mild mood changes known as the “baby blues.” These symptoms usually dissipate by the 10th day. PPD lasts much longer than 10 days, and can go on for months following child birth. Acute PPD is a much more serious condition that requires active treatment and emotional support for the new mother. Some studies suggest that women who experience PPD often have had prior depressive episodes.
Menopause is defined as the state of an absence of menstrual periods for 12 months. Menopause is the point at which estrogen and progesterone production decreases permanently to very low levels. The ovaries stop producing eggs and a woman is no longer able to get pregnant naturally. During the transition into menopause, some women experience an increased risk for depression. Scientists are exploring how the cyclical rise and fall of estrogen and other hormones may affect the brain chemistry that is associated with depressive illness.
For older adults who experience depression for the first time later in life, other factors, such as changes in the brain or body, may be at play. For example, older adults may suffer from restricted blood flow, a condition called ischemia. Over time, blood vessels become less flexible. They may harden and prevent blood from flowing normally to the body’s organs, including the brain. If this occurs, an older adult with no family or personal history of depression may develop what some doctors call “vascular depression.” Those with vascular depression also may be at risk for a coexisting cardiovascular illness, such as heart disease or a stroke.
Researchers are looking for ways to better understand, diagnose and treat depression among all groups of people. Studying strategies to personalize care for depression, such as identifying characteristics of the person that predict which treatments are more likely to work, is an important goal.