Heres a long winded artical on the subject:
http://ajp.psychiatryonline.org/cgi/con ... /164/3/380
To make it ADHD friendly and legal for WP I will pick out some random points from it.
Quote:
pattern of comorbidity, with significantly greater prevalence of social phobia, generalized anxiety disorder, specific phobias, bipolar II disorder, dysthymia, personality disorders, and pathological grooming disorders (8, 9). Hoarders often have less insight into their symptoms than do nonhoarding OCD patients (6, 9), which may make them less likely to seek treatment.
Quote:
hoarding has consistently been associated with poor response to cognitive behavior therapy for OCD (15, 16). Taken together, these studies suggest that compulsive hoarding is a clinically distinct subtype of OCD
Quote:
Compulsive hoarders also appear to have a different pattern of neurocognitive deficits than nonhoarding OCD patients