I have a friend who has this strange condition. While eating rice, twice so far, the rice sort of blocks his throat near the centre of his chest. Now, he doesn't have difficulty breathing but he keeps getting tiny hiccups for about 8-15 minutes. The whole while he feels a sort of pain resembling burning (but no feeling of heat) at the centre of his chest. When the hiccups subside, the pain goes away and he feels perfectly fine. Last time he did at the end cough up this thick white gooey secretion after which he felt perfectly fine and both the pain and the hiccups subsided. Any idea what this is? Oh and the guy's perfectly healthy and 18. Any help would be deeply appreciated.