The first kind of loneliness is temporary. This is the most common type. It usually disappears quickly and does not require any special attention. The second kind, situational loneliness, is a natural result of a particular situation, for cxample, the death of a loved one, or moving to a new place. Although this kind of loneliness can cause physical problems, such as headaches and sleeplessness, it usually does not last for more than a year. Situational loneliness is easy to understand and to predict.The third kind of loneliness is the most severe. Unlike the second type, chronic loneliness usually lasts more than two years and has no specific case People who experience habitual loneliness have problems socializing and becoming close to others Unfortunately, many chronically lonely people think there is little or nothing they can do to improve their condition.Psychologists agree that one important factor in loneliness is a person's social contacts, i.e. friends, family members, coworkers, etc. We depend on various people for different reasons. For instance, our families give us emotional support, our parents and teachers give us guidance, and our friends share similar interests and activities. However, psychologists have found that the number of social contacts we have is not the only reason for loneliness. It is more important how many social contacts we think or expect we should have. In other words, though lonely people may have many social contacts, they sometime feel they should have more. They question their own popularity.