Loneliness is a universal human emotion that is both complex and unique to each individual. Because it has no single common cause, the prevention and treatment of this potentially damaging state of mind can vary dramatically.
For example, a lonely child who struggles to make friends at school has different needs than a lonely older adult whose spouse has recently died.
As social beings, most of us feel the need for rewarding social contact and relationships. One common definition of loneliness is that it is the feeling we get when our need for this type of contact is not met.
However, loneliness is not the same as being alone. You might choose to be alone and live happily without much contact with other people. Or you may have lots of social contact, or be in a relationship or part of a family and still feel lonely.
Loneliness has many different causes and affects people differently. Often people feel lonely because of their personal circumstances. But sometimes loneliness is a deeper, more constant feeling that comes from within.