Hi!
I can understand your concern for your husband.
If a patient arrives in my clinic, I would advise and suggest:
1. Yawning is many time a sign of
low blood sugar. As you say, he feels tired, which indicates low sugar levels available to the brain .
2.He has frequent body temperature changes. Normally, the body temperature varies with day and night, but the changes you mention are more than normal
3. As you rightly said, slim stature, temperature changes,
high blood pressure can be directly or indirectly linked.
4. Slim, non-smokers can also have High blood pressure.
5. Please get him examined for his blood pressure control. It should remain within normal limits. If needed, his medicines can be changed.
6. Please check his blood sugar levels. The
tiredness may be related to
insulin insensitivity, i. e.
Diabetes. Though he is slim, there are lean Diabetics also.
7. Please check his thyroid levels. Thyroid problems can also have tiredness, fatigue, temperature changes.
8. Please consult your local physician with the reports. If there are any other health issues, they also need to be corrected with blood pressure.
With the control of these factors, his complaints will definitely reduce.
Please feel free to consult.
Wish him a speedy recovery.