Deeply lonely in the borderland between childhood and adulthood - Experiences of existential loneliness as narrated by adolescents.

It is important to support adolescents' sense of belonging, and they may need assistance in dealing with existential loneliness, as well as with finding constructive and healthy ways of recuperating from the suffering. Professionals need knowledge of existential loneliness to promote adolescents' existential health and well-being.