yes I heard about this type of allergy some time ago, and its sufferers have symptoms like overall tiredness and nasal congestion

I've made some research, and I saw that there is indeed an allergy with the yeast. See this links.

http://www.allergy-details.com/yeast-allergy/yeast-allergy/

What is Yeast Allergy?

That sounds horrible, I thought things like peanut allergies were bad enough. Still I guess it could be worse. My neighbors kid has peanut allergy so for some reason I guess I pay more attention to it now.

I am allergic to yeast. I can however eat sourdough made with a starter that you make on the counter. I am in extreme pain if I eat a piece of store bought bread.
Its frustrating because I say, " I am allergic to yeast" and people want to feed me gluten free, but I can eat wheat. Weird I know.

The only alcohol I can have is tequila. Everything else makes me bloat and my fingers and toes swell. After much testing we figured out it is yeast.