Here is another research related to hoarding and this is from Saxena:=0A=
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http://ajp.psychiatryonline.org/cgi/content/full/161/6/1038=0A=
Cerebral Glucose Metabolism in Obsessive-Compulsive Hoarding=0A=
Sanjaya Saxena, M.D., Arthur L. Brody, M.D., Karron M. Maidment, R.N.,=0A=
M.F.T., Erlyn C. Smith, B.S., Narineh Zohrabi, B.S., Elyse Katz, B.S.,=0A=
Stephanie K. Baker, B.S., and Lewis R. Baxter, Jr., M.D.=0A=
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In the conclusion it says:=0A=
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CONCLUSIONS: OCD patients with the compulsive hoarding syndrome had a=0A=
different pattern of cerebral glucose metabolism than nonhoarding OCD=0A=
patients and comparison subjects. Obsessive-compulsive hoarding may be=0A=
a neurobiologically distinct subgroup or variant of OCD whose symptoms=0A=
and poor response to anti-obsessional treatment are mediated by lower=0A=
activity in the cingulate cortex.=0A=
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This preliminary study had several limitations that reduced its power=0A=
and generalizability. Because the original study was designed to=0A=
compare OCD to major depressive disorder and normal comparison subjects=0A= ...