Hoarding Disorder: Causes, Symptoms, and Treatment Options.
Hoarding happens when someone can’t throw things away and collects too much stuff. This can create unsafe and unhealthy living spaces, and cause stress in relationships. Hoarding Disorder (HD) is a condition where hoarding gets worse over time. It mostly affects adults but can start in teens. It’s recognized as a mental health disorder and often occurs alongside other conditions. Treating it requires self-motivation and help from a doctor, with supportive but non-judgmental family involvement.

References:
https://www.healthline.com/health/hoarding#hoarding-disorder