Major depression is when five or more symptoms are present for at least two weeks. These symptoms include feeling sad, hopeless, worthless, or pessimistic. In addition with major depression often have behavior changes, such as new eating and sleeping patterns. Major depression increases a person's risk to suicide.
Different people are affected in different ways by major depression. Some people have trouble sleeping, they lose weight, and they generally feel agitated and irritable. Others may sleep and eat too much and continuously feel worthless and guilty. Still others can function reasonably well at work and put on a "happy face" in front of others, while deep down they feel quite depressed and disinterested in life. Others may have periods of several episodes. Still others may have more and more occurrences as they age. Some studies have indicated that the more depressive episodes a person experiences, the less time there is between the episodes. Also, the number of episodes a person has had may predict the possibility of having another bout of depression.
I know of a lady of around thirty who had achieved a good marriage, family and career. She underwent the above symptoms and started having problems with her husband and work place, waking up, she even became untidy. But at the end, the symptoms were noted and she was taken to a hospital and she got help.
Depression is as crippling as chronic heart disease, yet many Severely ill depressed patients receive little or no antidepressant patient's therapy. This needless suffering is tragic in this age of newer, highly effective medications. Antidepressants therapy for major depression dramatically reduces suicide rates and hospitalization rates. Unfortunately very few suicide victims receive antidepressants in adequate doses, and even worse most receive no treatment for depression whatsoever.