Brain/brain stem swelling foiled by circulation booster Nasalcrom
I suspect brain/brain stem swelling, a kind of allergic reaction that can be triggered by stress and stressors, of cutting off the blood supply to mid-brain glands. This sensitivity is commmon in the Irish and Native American populations especially. Hence the Irish Rosie O'Donnell would receive relief from her "depression" by increasing the blood supply to the brain by inversion therapy.
Simply inverting the head can open up circulation. Self-treatment often includes ingestion of drugs, and often alcohol, a vasodilator. These brain/brain stem sensitive types can be the drinkers/alcoholics who retain or gain a modicum of mental clarity because of the increased blood supply to the brain.
The unique over-the-counter nasal spray, NasalCrom, Cromolyn Sodium, will relieve brain/brain stem swelling. I would counsel taking mixed 50/50 with simple saline nasal spray to keep it as mild as possible. NasalCrom is job one to try in delinking this dangerous physical component from stinkin' thinkin' and drinkin'.