Quote from bojay on October 6, 2021, 1:33 pm

https://www.webmd.com/migraines-headaches/headache-and-migraine-trigger-weather

In a survey by the National Headache Foundation, 3 out of every 4 people said weather triggered their headache pain.

The people who took the survey ranked 16 possible headache triggers and described which ones seemed to bring on their migraines and other headaches. Here are some environment-related triggers that the survey included, along with the percentage of people who said they felt affected by them:

• Weather or barometric pressure changes: 73%
• Intense odors: 64%
• Bright or flickering lights: 59%
• Smoke: 53%
• Extreme heat or cold: 38%
• Altitude changes: 31%
• High winds: 18%

Experts believe that people who get frequent headaches are more sensitive to changes in the environment.  They suspect that people who get migraine headaches have probably inherited this sensitivity.

 

Quote from bojay on October 6, 2021, 1:38 pm

http://www.barometricpressureheadache.com/barometric-pressure-headache-causes/

Unfortunately, although numerous studies confirm what people have known for millennia ( i.e.that weather and altitude significantly affect living things, including causing headaches in weather or altitude sensitive people), at present, there appears to be no single and definitive explanation universally accepted to explain the precise mechanism and biological response to account for Barometric Pressure Headaches. Various explanations have been suggested which include the possibility that changes or fluctuations in barometric pressure are associated with:

• Alterations in oxygen levels that result in blood and cranial vessels trying to compensate by contracting (vasoconstriction) and/or dilating (vasodilation) in the head region. Pain is caused by swollen blood vessels pressing on nerve fibres in the brain as well as from swelling/inflammation of brain tissue from various chemicals released during this process. This was the most popular explanation of migraines from the medical profession prior to the development of modern resonance imaging techniques. These now indicate that migraines are not simply due to blood flow changes but are much more complex in nature involving various changes in the brain.
• Vasodilation of blood vessels in head due to barometric receptors in the brain being activated.
• Atmospheric electrically charged/ionization of air particles that trigger headaches. Positive ionization has been linked to the release of excessive serotonin into the bloodstream.
• Triggers involving changes in electrical activity within the brain.
• Triggers involving pressure induced chemical changes occurring in the body.
• Producing small pressure variations in the fluid of the brain that trigger brainstem migraine receptors.
• Changes in neurotransmitters of the brain.

Quote from smAsh on November 16, 2021, 6:00 am

Anybody got more on this? 

Fyi, chronic sinusitis and mouth breathing can affect things like brain oxygenation.  Sleep is another example. 

Without enough sleep, you'll have more cortisol, higher systemic inflammation, worse recovery from physical efforts all of which contribute to higher blood pressure for example.  

Blood pressure affects your system to environment ratio and each system not working right will add a little stress.  In other words, your blood pressure is slightly physically lower at higher altitudes.  At most normal altitudes, you should adjust seamlessly to changes in barometric pressure as every little stressor on the body is in many ways analogous to an atmospheric pressure change. 

Eustacian tubes are a prime example.  Have inflammation there, and your ears might equalize pressure and that can be very very bad...