Pythagoras didn't write down his beliefs but communicated them orally to a select few men, so it's hard to know if what we have is his original teachings.
For many years, the primary focus of researchers of Chinese mythology involved exploring Pre-Qin myths and orally transmitted mythological narratives circulating among various non-Han ethnic groups.
But even before a definitive diagnosis can typically be made, the first line of treatment is to rapidly replace the lost water and electrolytes with rehydration salts either orally or intravenously.