OK, I realize that finding some more information on this topic is a real stretch in this forum. But I am consistently impressed with the caliber of women haunting these boards, so figured it was worth posting - just in case someone has some experience, knows a good source for info, or anything! I am trying to find information about potential long-term problems that may linger or result from carbon monoxide (CO) poisoning. Another useful question to answer would be "Can a person have two stroke-like incidences within a month, and the tests all come back clear, and there's really just nothing to worry about?" My father experienced a carbon monoxide incident in his last home, last winter. He experienced increasing headaches and fatigue, and some other weird symptoms, and attributed it to a winter cold, so he stayed home (and kept getting worse). Finally, through a stroke of luck, the furnace problem was discovered, the house was tested (very high CO), then aired out (and he stayed elsewhere). Blood tests confirmed elevated CO levels. It is generally accepted that the body recovers as the blood levels go back down, rather quickly. But I keep reading information about long-term effects, and permanent damage. In the past month, he has had two incidences of stroke-like symptoms (TIA) - sudden headache, numbness, tingling, slurred speech. The first happened in New Mexico, and the doctors there attributed it to the elevation. But he's a small plane pilot, so it's not like his body has never been above 10,000 feet before! Three weeks later it happened again, back in his hometown. He drove himself to the hospital (and this man HATES the hospital, so it was serious enough to scare him!). They ran all kinds of tests, and basically said there's nothing wrong and it likely "won't happen again" (frustrating words to hear, since it basically DID "happen again" - and he says they claim it's a coincidence!). The other factors here are that he has demonstrated some other "symptoms" that we are all just putting together now, now that we're all talking - my mom (his ex-wife), his sisters and brothers, myself, etc. Things like short-term memory problems (forgetting converstaions), behavioral chanages (mood swings, snapping at you). It seems like any of these symptoms could be attributed to many things, even just age (he is mid-sixties). But I can't help wondering about the carbon monoxide poisoning, and potential for permanent brain damage that could also yield these symptoms. Or, I'd be happy to understand more about TIA ("mini-strokes") and whether or not they can always be explained, or if they suggest bigger problems on the horizon. Sorry for the long, and somewhat off-topic post! If anyone has any thoughts or experience with stroke, TIAs, or carbon monoxide poisoning, I'd love to hear it!