We all know collectors – those who seem to never have enough stamps, salt shakers, or seashells. Some people start collections because they love the objects they collect, while others amass large collections as an investment, hoping their collection will increase in value. While some collecting may seem a bit eccentric, it’s all innocent enough – right?

But when does collecting become excessive and tip from collecting to hoarding? And even more importantly, when does hoarding become a real health hazard?