In severe cases, a house may become a fire hazard (due to blocked exits and stacked papers) or a health hazard (due to vermin infestation, excreta and detritus from excessive pets, hoarded food and garbage or the risk of stacks of items collapsing on the occupants and blocking exit routes). Hoarding affects more than just the person who has the strong attachment to possessions, as other people living in the home and neighbours can be affected by the clutter. Individuals with hoarding disorder have a quality of life as poor as those diagnosed with schizophrenia. The disorder increases family strain, work impairment, and the risk of serious medical conditions.