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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Fatigue And Heat Intolerance?

Hi I am Garry, when I was 59 yrs old I took Chantix to stop smoking. in the last week of taking Chantix I developed 12 different problems. Other than depression, I had a major fatigue problem, falls asleep a lot. sometimes hard to stay a wake. also my ability to withstand heat like I use to has changed use to always be on the colder side, now I am always hot and continuously sweating a lot. WHAT HAS HAPPENED TO ME !!!!!!!
posted on Thu, 28 Aug 2014
Twitter Tue, 26 Jul 2016 Answered on
Twitter Tue, 26 Jul 2016 Last reviewed on
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Endocrinologist,  's  Response
Hello and thank you for asking!

From the symptoms you prescribed, the first to be ruled out is an over active thyroid.

For this you need to check:

-TSH,FT4 and FT3 level.
If hyperthyroidism is confirmed than you should start treatment and within 2 weeks you will see the improvement.

If the thyroid hormones result to be within the normal ranges, than another cause should be try to find.

Please do not hesitate to attach the above hormonal result when you will have them.
Wish you good health.

Kind regards,
Dr.Mirjeta Guni
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What Causes Fatigue And Heat Intolerance?

Hello and thank you for asking! From the symptoms you prescribed, the first to be ruled out is an over active thyroid. For this you need to check: -TSH,FT4 and FT3 level. If hyperthyroidism is confirmed than you should start treatment and within 2 weeks you will see the improvement. If the thyroid hormones result to be within the normal ranges, than another cause should be try to find. Please do not hesitate to attach the above hormonal result when you will have them. Wish you good health. Kind regards, Dr.Mirjeta Guni