Anyone else notice new heat/humidity intolerance since Long Covid?

Posted by shirljk @shirljk, Apr 13, 2025

I have been in Hawaii for vacation for about 12 days now. The heat and humidity seems to be making me very sick. Nausea, headaches, dizziness, high heart rate, and exercise intolerance. Of course these are all long covid symptoms anyway. But I was doing much better managing the symptoms before coming here. A short walk on the beach and sitting next to the ocean afterward made me sick for the rest of the day. I was hoping I would feel better here, not worse. Makes me think this summer in Minnesota heat and humidity I will be indoors a lot! Any body else have this heat/humidity intolerance new since Covid? Anything anybody knows to help with it outside of living indoors in AC?

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It may certainly be related to Covid I think and I would also test your thyroid/parathyroid hormone if you havent yet.

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Profile picture for da69 @da69

Mine is hot cold... hot cold....On with sweatshirt then off with sweatshirt.
It is a never ending cycle that i have just learned to deal with.

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I have that plus depression plus family thinking it’s old age (I’m 78 and no problems til COVID. Help!)

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I also have developed heat and humidity intolerance. Many days a hot shower can also bring symptoms of joint and muscle pains . I own an indoor hot tub and have been afraid to use it for the past year. I also get the Covid “hot flashes and cold chills “ at times with no warning or reason . Covid has greatly affected how I live my life.. often I don’t go somewhere or do a particular activity because I’m afraid that it will cause a relapse is symptoms.. I will say that I have greatly improved since a year ago but still have bad days ..

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I also have this heat intolerance (male). I believe it contributed to a recent relapse (we have had a typical hot summer where I live and you can’t really open the windows, even when the temps outside during waking hours don’t come down lower than the outside temp, or wherever you set your AC)…

Hopefully, the number of active trials and research will be able to help us sooner rather than later.

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Yes, my metabolism was completely changed by covid, long covid, and a second covid, and I am running hot for the first time in my life. Reducing inflammation in your gut and brain is a key approach to dealing with long covid. I suggest you look at Leo Galland, MD's recommendations for diet and supplements. They have helped me significantly, https://drgalland.com/long-covid Please scroll to the bottom of the page and download the pdf, it is well organized and easy to search in. Be well!

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I was diagnosed in the spring of 2021 with Long Covid. By the summer of 2022, I could no longer do yard work, which was a great stress reliever for me. My doctor said I was heat intolerant. A few months later I was diagnosed with diabetes, and told the heat intolerance was due to diabetes. I later learned there is a connection between Long Covid and diabetes, and I wonder if it also contributed to my heat intolerance. 4 years later I still can’t tolerate heat and, living 75 miles from the Gulf, our humidity makes it worse. I went through menopause in my 50’s and a few years ago at 69, started having hot flashes again. My doctor can’t explain it, so I’m assuming it’s another “gift” from Long Covid.

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I feel hot almost all of the time. I have hot flashes a few times a day. Drinking ice water seems to help, and going outside helps too. I don't notice it when I am outside, which seems odd to me. It is as if I don't have a thermostat- my body cannot adjust to air conditioning- I put on a jacket but then have to take it off within about five minutes because I get too hot, if I am in a grocery store or restaurant where the air conditioning is so cold. I sleep under only a sheet at night, but sometimes get too cold and use a blanket, only to have to remove it because I get too hot. After going to about eight different specialists at Vanderbilt Medical Center, I discovered Dr. Huddleston at the Vanderbilt Covid Clinic. He is treating me now. He explained that everything that happens in your body begins in the lower intestine. He told me to follow these recommendations:
1. No consumption of cow's milk. No ice cream or soft cheese products like sour cream, cottage cheese. Aged cheese that's hard, like Cheddar or Swiss, is ok in small portions. Reduce dairy consumption by 80%.
2. Take 5,000 units of Vitamin D a day.
3. Get 30 minutes of sunshine a day.
4. Take 1 spore probiotic capsule with water a day, in the morning.
5. Take 2 magnesium threonate capsules at night.
I began having the heat sensations within two weeks after I had Covid in November 2023. My neurologist prescribes pregabalin, which I take now, and my PCP prescribes Veozah, the new pill for hot flashes that has come on the market in the last 1.5 years. These have helped me deal with the heat sensations. The pregabalin affects my balance and my ability to recall information, but it helps me not to have the jittery, anxious feeling that came with the hot flashes.
Dr. Huddleston said it will take three to six months before I will see any improvement. I am one month into this. Will report later if there is any change. Good luck to everyone in dealing with your condition!

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Profile picture for mjm1947 @mjm1947

I feel hot almost all of the time. I have hot flashes a few times a day. Drinking ice water seems to help, and going outside helps too. I don't notice it when I am outside, which seems odd to me. It is as if I don't have a thermostat- my body cannot adjust to air conditioning- I put on a jacket but then have to take it off within about five minutes because I get too hot, if I am in a grocery store or restaurant where the air conditioning is so cold. I sleep under only a sheet at night, but sometimes get too cold and use a blanket, only to have to remove it because I get too hot. After going to about eight different specialists at Vanderbilt Medical Center, I discovered Dr. Huddleston at the Vanderbilt Covid Clinic. He is treating me now. He explained that everything that happens in your body begins in the lower intestine. He told me to follow these recommendations:
1. No consumption of cow's milk. No ice cream or soft cheese products like sour cream, cottage cheese. Aged cheese that's hard, like Cheddar or Swiss, is ok in small portions. Reduce dairy consumption by 80%.
2. Take 5,000 units of Vitamin D a day.
3. Get 30 minutes of sunshine a day.
4. Take 1 spore probiotic capsule with water a day, in the morning.
5. Take 2 magnesium threonate capsules at night.
I began having the heat sensations within two weeks after I had Covid in November 2023. My neurologist prescribes pregabalin, which I take now, and my PCP prescribes Veozah, the new pill for hot flashes that has come on the market in the last 1.5 years. These have helped me deal with the heat sensations. The pregabalin affects my balance and my ability to recall information, but it helps me not to have the jittery, anxious feeling that came with the hot flashes.
Dr. Huddleston said it will take three to six months before I will see any improvement. I am one month into this. Will report later if there is any change. Good luck to everyone in dealing with your condition!

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@mjm1947 that is great to hear that there are actual MDs who believe what science has been saying - that the gut is responsible for so much of our overall health, and what goes on in our bodies…

Keep us updated!

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Profile picture for oly78 @oly78

I also have this heat intolerance (male). I believe it contributed to a recent relapse (we have had a typical hot summer where I live and you can’t really open the windows, even when the temps outside during waking hours don’t come down lower than the outside temp, or wherever you set your AC)…

Hopefully, the number of active trials and research will be able to help us sooner rather than later.

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@oly78 I’m in western Florida, have been here for 50 years, and I have NEVER been this miserably hot.

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