Hoarding is a mental disorder having its onset at young age and often worsening with age, manifested as a need of storing up goods to an extent that significantly hampers everyday life. In the light of conducted studies, at least 1 to 2% of the adult population suffers from hoarding. Upon increased compulsive hoarding with aging, problems arise especially for those living alone. Hoarding differs from obsessive-compulsive disorder in its course and treatment response. Treatment of hoarding disorder is based on methods applied in cognitive behavior therapy.