Anxiety disorders include obsessive-compulsive disorder (OCD), social phobia, and generalized anxiety disorder, and are usually treated with prescription drugs, talk therapy, or both.

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Like many people with obsessive-compulsive disorder (OCD), Gillian said she was too embarrassed to talk about her condition with her family and used to try to hide her obsessional thoughts and ritualistic actions from them.

BBC: Gillian waited years to get the correct diagnosis and help

She threw in slight OCD (obsessive-compulsive disorder) for good measure, to which I scoffed, thinking of the clothes strewn about my house.

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It's often seen as a form of obsessive-compulsive disorder, but some aspects don't fit the OCD pattern.

WSJ: Compulsive Hoarding Affects up to 2% of the Population

And despite the fact that hoarding has traditionally been seen as a symptom or subtype of obsessive compulsive disorder (OCD), brain activity in those who cannot de-clutter is also distinct from that of people with typical OCD, the study shows.

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