YES! I lived in N.Y. all my young life. The Doc told me when I was 16 yrs to move to Az or plan not to be able to walk. By 19 yr I was unable to walk. We moved to West Texas. I started walking again. But it rains and sometimes it snows. During those periods I'm down! I have poly arthritis and Lupus. Yes weather does happen to some people. The different weather pressures play a part on my health too. I can't speak for everyone though. What happens during wether issues?

High humidity definitely makes me worse. When humidity is high, the oxygen molecules are displaced by water molecules, so breathing very humid air can lower your oxygen levels while still requiring the same amount of effort to take it in. Add heat to that, and you have a recipe for disaster.

Gail, yes weather is a very big part of how I feel. I do worse when the weather changes, especially from cool to hot & humid. Limp noodle....as I am physicist at MIT, I must humbly say that humidity does not displace oxygen molecules, although as you and I can attest, it feels that way in a big way at times. At sea level Oxygen is a constant 20.7% on average, what does change the oxygen percentage is temperature and barometric pressure as those 2 enviromental conditions either pack the Oxygen molecules closer together or in hot weather with low pressure lower how tightly packed the oxygen molecules are packed together and this slightly lowers the available oxygen per breath. The good news is that temperature and pressure have a very small effect in how much oxygen is in the air we breathe. If however you live at let's say 7000 feet about sea level, you experience oxygen levels about 20% lower than at sea level. As far as humidity, it just makes breathing harder as the air is simply put "thicker" with the excess water molecules. For me my FAVORITE time of year here in New Hampshire is the autumn and winter when it's cool and dry as it's simply easier to breathe and our bodies do not expend energy to cool themselves though excess sweating. Many with Lupus, M.S. And other conditions do seem to do better in the drier climates, I can fully understand why, I would not make it here in the northeast in the summer without good air conditioning. I used to live in the higher altitudes in the mountains of Colorado and do miss it. Thanks for this note, it's a good one to have and bring up the discussion of how the weather can affect how we feel.

As always, rock-solid information from Joe. Pressure changes (incoming/outgoing weather patterns) really affect my sinuses, which in-turn aggravates my MG. The Autumn is bittersweet for me, as I am looking forward to the cooler weather, but dread the seasonal allergies that come with it (also aggravate my MG).

Chester, yes my MG is definitely affected by rain. Clearly MG doesn't love humidity, but I much worse when I am unexpectedly caught walking and running errands in the rain rather than when I am doing activities during a sunny non raining humid day. I'm not a doctor but since MG is affected by hot showers as well it definitely makes sense.