Suggest Treatment For Throat Blocks And Vomiting While Having Food

Ever once in a while when I begin to eat or after eating maybe just one or two bites, my throat will feel as if it is closing up and I cannot swallow. I can t drank anything either to wash the food down. The only thing that usually works is when I throw up. I have been told that maybe this is dysphagia. I never know when this is going to happen and sometimes in a restaurant I may even have to throw up in a napkin because it seems food is in my throat and won t go down. Any advice?