As a kid, I had terrible heat intolerance. I would often faint in the sun, and I’d get hives out of the blue. When I ate certain foods that contain high levels of histamine, like aged meats, pickles, aged cheeses, citrus fruits, and more, my scalp would tingle and a heavy fatigue would wash over me. Later, I also experienced gradually worsening symptoms like migraines, vertigo, heart palpitations, anxiety and panic attacks, acid reflux…