Ever since I developed Gastroparesis, I get really nauseous and/or vomit when I have colds. I'm not entirely sure why.
My POTS also gets bad when I have a cold, and I feel like I'm starting to pass out all the time. My heart races when I stand and my vision starts to go white/black/fuzzy. Even going from lying down to sitting up in bed makes me feel dizzy, causes palpitations, and causes my vision to fade.
Sometimes I picture my body as a separate entity, who happens to be a huge drama queen. A tiny cold virus enters, and my little blood cells and antibodies run around screaming - alerting every other system in my body, so that they too can run around like chickens with their heads cut off.