Even though depression entails one having sad feelings, it is actually a condition that is by far more than merely having some degree of sadness. This is because the magnitude of sadness that one feels when depressed is so intense, it may also be accompanied by numerous other symptoms.
There are many types of depression, one of which is referred to as the major depressive disorder in clinical terms. This type of depression is serious because the individual is depressed for a large portion of a day, year-round. The symptoms for this depression include loss of interest in favorite activities and an unexplained gain or loss in weight. Insomnia, difficulty i falling asleep, is also one of the many symptoms. An individual who has a major depression is also more likely to feel like he or she is dissatisfied with all that life has to offer. The other symptoms of this condition include feeling very tired the entire day, even without having done any work, experiencing trouble when concentrating and in one trying to make decisions.
Doctors usually diagnose this depression if a patient has suffered five or more symptoms, if the patient has been experiencing the aforementioned symptoms for a period of two or more weeks, and if one of the symptoms is the loss of interest in activities that the patient once found very interesting.