Arab stallion 13 years old, always had slight cough, not stopped him completing 80 mile endurance rides. Stabled, fed hay,cubes,soaked sugar beet. 2/3 months ago started coughing more than usual, and drinking less. 2 weeks ago `choke`, vet attention, 25litres perfusion. OK after 24 hours. Started choking again. Only drinks from stream, I.e. When head is almost between legs. Small amount of grass starts choking again. Recovers quickly but stqrts choking again very quickly. Could this be scarring in the oesophagous? Or are there any other more obvious reasons why he will only drink in same position. Could the oesophagous have a `kink` in it, like a poor quality hosepipe? Silly question I know. I will ad that we are in very rural France with no horse specialists anywhere near. Any suggestions greatfully received.