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low body temperature--a symptom of fibro???
15 Replies
bluewillow - May 16

Hello! I have not been diagnosed with fibromyalgia, but I am really wondering about it due to some varied symptoms I've had lately. I am a 50-yr-old female, also going through menopause, and the symptoms seem to be similar. However, there is one weird symptom I have developed recently that none of my doctors seem concerned about: low body temperature. Almost all my life, my body temp has run 98.6. In the last 6-8 months, it has been 97.1, 97.3, and 97.6, and rarely any higher. I have lost about 35 pounds, mostly due to health anxiety, plus eliminating junk food from my diet. My thyroid has checked out fine numerous times. Could low body temp be a symptom of fibromyalgia? Thanks so much!


lbrandel - May 16

I am not sure about low body temperature, but I have low blood pressure, and poor circulation....I am always cold!!



JJ1 - May 17

Just curious because i don't ever really take my body temperature except when i am feeling feverish. What inspired you to take your temp all the time? Were you feeling chills or did a doc ask you to do it? I have read of some association with Fibro and low body temps and also have read of it being a sign of other illnesses. I would suggest that you discuss anything out of the ordinary with your doctor.


larry - May 17

Here is an EXCELLENT article on the low body temperature,


JJ1 - May 17
(no dashes are supposed to be in the web address so delete any that may appear after copying and pasting to your browser)……….
"Most people think of a "normal" body temperature as an oral temperature of 37°C (98.6°F). This is an average of normal body temperatures. Your temperature may actually be 0.6°C (1°F) or more above or below 37°C (98.6°F). Also, your normal body temperature changes by as much as 0.6°C (1°F) throughout the day, depending on how active you are and the time of day. Body temperature is very sensitive to hormone levels and may be higher or lower when a woman is ovulating or having her menstrual period. ………………..
Can a low body temperature be dangerous?
An abnormally low body temperature (hypothermia) can be serious, even life-threatening. Low body temperature may occur from cold exposure, shock, alcohol or drug use, or certain metabolic disorders, such as diabetes or hypothyroidism. A low body temperature may also be present with an infection, particularly in newborns, older adults, or people who are frail. An overwhelming infection, such as Gram-negative sepsis, may also cause an abnormally low body temperature.


larry - May 17

Hi JJ1, I think bluewillow was referring to having a low body temp for an extended period of time, meaning months ar years- not just with infections or certain times of the day. Nearly all fibro patients are hypothyroid and the thyroid is responsible for temperature. That website that I posted has an excellent article on this


JJ1 - May 17

Reread the post larry. She said last 6 to 8 months. I am not trying to diagnose her anyway. I was just giving her info about the MANY things that could cause it. It sounds like simply checking your temp at different times of day could have a pretty wide swing in temperatures.


bluewillow - May 18

Hey and thanks for all the great responses. To clarify, my temperature readings were taken at my doctor visits, plus a time or two at home. Over the past 6 to 8 months, I have seen my family doc, my gynecologist, a cardiologist, and gastroenterologist, and that's where the body temp readings came from (plus big medical bills!) I have always been "hot-natured" all my life, but lately I get cold or chilled more often. I just thought I'd ask if this was a common symptom of fibromyalgia. Thanks again too all!


JJ1 - May 19


I haven't had any drop in body temperature that I have noticed, but I do feel chilled when everyone else is comfortable or they may even feel warm when I am shivering. I get all bundled up then a while later I will be burning up. A heating pad is nice when I have the chills. Have the doctors mentioned your temperature being low or did you just start noticing that it seemed low all the time?


mumsey55 - May 20

HI Bluewillow, I don't know either if a low body temp has anything to do with FMS or not but I know I have had FMS for over 27 years and a low temp for as long as I can remember. Which as we all know sometimes isn't too far back. If I run a "normal" temp, then I have an infection someplace in my body and usually end up on antibiotics within a few weeks. Don't worry about the weight loss, in my opinion, that is from just what you said. Your anxiety and your eliminating the junk food. We'd all be amazed at how much weight we could lose just by not eating the JUNK! Good Luck to you. By the way, I am always cold too and am 58. Joyce


neuro1 - June 5 your doc and get tested for hypothyroidism again (make sure they're running a full panel- not just TSH, both bound and free T3 and T4). Hypothyr often mimics many of the symptoms of fibro and can exacerbate them also...especially the fatigue. In many cases borderline levels indicating hypothyr with the appropriate symptoms warrant trial treatment and many are responsive even though the blood trests still had them in a "normal" range. Typically, you shouldn't be loosing weight at all with hypothyr. Since you are experiencing anxiety/stress, adrenal cortical insufficiency (thyrotoxicosis) could be the real problem...though I've never seen it present with lowered body temp. It alsmost always presents with heat intolerance not cold. But with prolonged body temp drop, your docs should be focused on thyroid disorder first and foremost, then look to other problems.


larry - June 6

Hey Bluewillow and all- Here are two books that will you undertsand why you have probably been told that you are fine despite being very sick. 90% of the thyroid testing is incorrect and you may never get the correct diagnosis without having the correct info . Mary Shomon's books will help empower you to understand this and take control of your health and hopefully prevent you from the endless cycle of running to specialist after specialist and never getting well --“Living well with hypo/hyperthyroidism, what your doctor doesn’t tell you that you need to know” and “Living well with autoimmune disease (Lupus, RA, Thyroid, Celiac, Fibromyalgia, etc.) , what your doctor doesn’t tell you that you need to know”.. Also, a very good website that addresses some of the testing problems is "


skidoo - June 7

"90% of the thyroid testing is incorrect"...Where did you pull this "statistic" from?????


BrandyO - June 7

I have always had a lower than average body temp. Even the few times I have been sick with the flu, if I run a fever, it is low in comparison to most. I don't think it has ever been above 101 degrees. That's in my life time and I am 53. I never have worried about it or connected it to FM. Is there a connection?


mollyb1912 - June 10

There are many symptoms for fibromyalgia, but I do not know if the low body temp is one of them. Here is a link that lists several symptoms and natural remedies:

a look as there is a lot of helpful info there. If you do not see anything that looks like your problems you may want to seek a doctor. Remember that few treatments can replace benefit of a healthy diet and regualr exercise.


JoniB - June 16

I tend to run low grade fevers under 100 degrees.



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