Some of your problems sound like me lately. Are you losing hair too?
-Fatigue same here
-Brain Fog often
-Low Grade fever yep
-Cold sweats sometimes
-Joint pain/ache sometimes
-Burning pain in toes, back, and hands
-Tingling all over
-Malar rash sometimes
-Loss of Appetite often
-Weight loss 20 lbs
-vibration sensations all over
-Constipation stool softener is my friend
-Anxiety(Knots in stomach, butterflies, etc.) a lot lately
Do you have a thyroid problem too? Some of this can be part of this too.