Thanks for all these additional information.
I understand your concern.
Well as you describe,possible causes may include chronic infection, thyroid dysfunction, hyperlipidemia, pre-diabetes or diabetes.
I will highly advise to see your doctor for evaluation and tests such as full blood count, blood culture, fasting blood sugar level, lipid profile, thyroid function tests.
You should start a multi-vitamin supplement and eat fruits.
Also do regular exercises.
Take a bath before sleep.
Wear loose cotton clothes.
Do deep breathing.
And make an appointment with your doctor in next few days.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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It’s my pleasure to continue this conversation until you satisfy.
Waiting for your response.