Just my opinion. I figure the Vapors and Da Costas syndrome are the same thing. One is civilian, the other military. A hundred fifty plus years later, you have TILT and Gulf War Syndrome(PTSD). Not much else has changed, aside from the cause and affect relationship being broadened; and the name game. The broader question is, what do: PTSD, Bi-Polar, Hypochondria, the Vapors, MCS, Da Costas Syndrome, Gulf War Syndrome, TILT, Post Partum Depression, Toxic shock, Post Operative depression, Mycoplasma, Lyme Disease, Cabin Fever, PMS, Agent Orange, Toxic Shock, ME, Addiction, SIDS, EI, Chronic Fatigue, Idiopathic Environmental intollerance, Chemical Aids, Dippers Flu, Yuppie Flu, Anorexia Bolemia, OCD, ADD, Twentieth century illness, etc etc, etc.....all have in common. This is only a fraction of the overlapping syndroms, disorders, and conditions floating about. All involve a break down in the brain's detoxification system. When the brains detoxification filter is not working properly mental and physical chaos prevails. What do you call it when someone gets bitten by a rattlesnake, or struck by lightning, eats the wrong berries? I will throw in StarDust and the missing Link, just to keep you interested here. Do you know anything about Scrapie Anthony? The gateway to evolution is open, so what is in a name?