Jealousy/OCD

Jeremy said today that he feels that jealousy can't be counselled. He said that you need to loose something important through your jealousy to overcome it. I agree that it's a hard emotion to overcome but I have another theory and wonder if this has ever been researched. My son is diagnosed with OCD and has some really rare symptoms which were only recognized by a very experienced psychologist. Even he had only ever seen these symptoms in two patients whom he and a colleague had studied int he 60's. I myself have come across two more people with the same symptoms. My point is that OCD can be quite complex and mis understood. It is far from just an obsession with cleaning.In fact many sufferers don't have the cleaning trait at all.
Looking into our family history there are many forms of undiagnosed OCD, some classic, some unusual but one that stands out to me is obsessive, unrealistic jealousy, so strong in some family members that my husband's Nan had written on her husband's grave, 'Yes Les, I did love you!' This jealousy is present in several family member, mainly male but some female. They all have other OCD traits, undiagnosed but causing effects on their lives. Most of these family members are balanced in other ways and I strongly feel that this extreme jealousy is inherited rather than learned behaviour. They all hide their jealousy from others who are not within their immediate family unit.
Luckily my husband has not inherited this trait even though I am told that his Mum had it and so does her sister, two brothers, nephew and niece. My husband does however have other OCD traits.
I wonder whether cognitive behaviour therapy or even medication in extreme cases would help. Does Graham or anyone else have a theory on this? I would love to explore it more and have some very interesting DVD footage of my son which was used in his diagnosis. It's quite shocking behaviour and only displayed within the family home. I would love someone like Graham to explore this subject further as I bet there are many people and families suffering in silence. I don't want to go into my son's symptoms on here but would share them with Graham if he finds it interesting or valuable