Skin tightening after weight loss without surgery.

I have Neurocardiogenic Syncope, and recently lost 80 lbs. This has left me with a lot of excess skin that has destroyed my self esteem. I want to be able to get rid of it, but I'm scared of what going under the knife may do to my condition. Are there any less invasive ways to get rid of that type of extra skin? Mostly around the neck and belly, but my chest bothers me too.

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