Some times he can eat with no problem but it is becoming more frequent when he eats he needs to burp and holds his chest. Often he will throw up and then he is ok. I am not sure if he is not able to swallow or is swallowing wrong and the food won't stay down. This doesn't match the description of GERD or hernia. He has advanced dementia and Parkinson's disease and can't tell me what he is feeling.