My hands have been shaking for the last hour, when i sit its not so bad, when i stand i can barely hold myself up. I don t black out like im going to faint. I have breathing problems prior to this but I now have pressure in my chest. And my stomach didn t hurt till just now and I got like instant diarrhea.
Thanks for your question on Chat Doctor. I can understand your concern. Tremors, chest tightness, unexplained diarrhea, breathing difficulty etc. are commonly seen with carcinoid syn Chat Doctor.  It is due to hypersecretion of histamine. So better to consult physician and get done clinical examination and blood reports like histamine levels, ultrasound abdomen, stool microscopic examination etc. You may need antihistamine