The allergies angle is interesting. I am doing allergy immunotherapy shots right now, and the first few weeks of doing them, I had the worst fatigue of my life.

The allergies angle is interesting. I am doing allergy immunotherapy shots right now, and the first few weeks of doing them, I had the worst fatigue of my life. I just had no energy and low desire to do things. Once my immune system adjusted, the shots got a lot easier each week.