The aim of the present study was to determine the economic and social burden of compulsive hoarding in a large sample of individuals with self-identified hoarding, as well as a separate sample of family members of individuals who hoard. Self-identified hoarding participants (N = 864, 94% female, 65% met research criteria for clinically relevant compulsive hoarding) and family informants (N = 655, 58% described a relative who appeared to meet research criteria for compulsive hoarding), completed an internet survey. Questions were derived in part from those used in the National Comorbidity Survey (NCS), and when possible, hoarding participants were compared to NCS participants. Compulsive hoarding was associated with an average 7.0 work impairment days in the past month, equivalent to that reported by individuals with psychotic disorders and significantly greater than that reported by female NCS participants with all other anxiety, mood, and substance use disorders. Severity of hoarding predicted the degree of work impairment after controlling for age, sex, and nonpsychiatric medical conditions. Hoarding participants were nearly three times as likely to be overweight or obese as were family members. Compared to female NCS participants, hoarding participants were significantly more likely to report a broad range of chronic and severe medical concerns and had a fivefold higher rate of mental health service utilization. Eight to 12 percent had been evicted or threatened with eviction due to hoarding, and 0.1-3.0% had a child or elder removed from the home. These results suggest that compulsive hoarding represents a profound public health burden in terms of occupational impairment, poor physical health, and social service involvement.

Compulsive hoarding, the acquisition of and failure to discard large numbers of possessions, is associated with substantial health risk, impairment in functioning, and economic burden. Despite clear indications that hoarding has a detrimental effect on people living with or near someone with a hoarding problem, no empirical research has examined these harmful effects. The aim of the present study was to examine the burden of hoarding on family members. Six hundred sixty-five family informants who reported having a family member or friend with hoarding behaviors completed an internet-based survey. Living with an individual who hoards during childhood was associated with elevated reports of childhood distress and family strain. Family members reported high levels of patient rejection attitudes, suggesting high levels of family frustration and hostility. Rejecting attitudes were predicted by severity of hoarding symptoms, the individual's perceived lack of insight into the behavior, and having lived in a cluttered environment during childhood. These results suggest that compulsive hoarding adversely impacts not only the hoarding individual, but also those living with them.

Compulsive hoarding (the acquisition of and failure to discard large numbers of possessions) is associated with substantial health risk, impairment, and economic burden. However, little research has examined separate components of this definition, particularly excessive acquisition. The present study examined acquisition in hoarding. Participants, 878 self-identified with hoarding and 665 family informants (not matched to hoarding participants), completed an internet survey. Among hoarding participants who met criteria for clinically significant hoarding, 61% met criteria for a diagnosis of compulsive buying and approximately 85% reported excessive acquisition. Family informants indicated that nearly 95% exhibited excessive acquisition. Those who acquired excessively had more severe hoarding; their hoarding had an earlier onset and resulted in more psychiatric work impairment days; and they experienced more symptoms of obsessive-compulsive disorder, depression, and anxiety. Two forms of excessive acquisition (buying and free things) each contributed independent variance in the prediction of hoarding severity and related symptoms.

These findings suggest that suicide potential may be related to cognitive risk factors for anxiety.

Existing psychological and pharmacological interventions for obsessive-compulsive disorder have not been particularly successful for compulsive hoarding, perhaps due in part to poor insight on the part of sufferers. Individuals with compulsive hoarding problems commonly display lack of awareness of the severity of their behavior, sometimes denying that they have a problem and often resisting intervention attempts and failing to follow through with therapeutic assignments. Using an internet-based survey, family and friends of individuals with reported hoarding problems (family/friend informants, N = 584) provided ratings of the hoarder's level of insight. They also made several ratings of the severity of the person's hoarding behavior, then rated the same items again with regard to how they thought the hoarder would respond to the items. Family/friend informants described the hoarder on average as having fair to poor insight. More than half were described as having ''poor insight'' or ''lacks insight/delusional,'' substantially worse insight than found in samples of OCD clinic patients using the same measure. Family/friend informants' ratings of hoarding severity were significantly greater than were their estimates of the hoarder's ratings. Hoarders described as showing less distress about the hoarding were described as showing poorer insight. These results suggest that compulsive hoarding is characterized by poor insight into the severity of the problem. Treatment development might need to emphasize strategies to bolster awareness, insight, and motivation.