Went to Spain a few years back,drank coffee and more coffee,lunch 2 pints and food,fell asleep in the heat,awoke and was really tired, got in the pool deep breath swim a width underwater.Then I went freezing told my partner in a slurred voice.That night mouth dropped slightly but ok in morning,went to clinic they said dehydration as I was on water tablets so I had to drink isotonic which helped but it was like my batteries kept going low and I was slurring again,went to hospital in Spain they said it was the very high and low temperature when I got inthe pool
2 months later in England MRI said I'd had Tia could it have been dehydration
Ray