ds2 appears to have no sense of thirst and has to be reminded to have a drink always. Having said this we do manage to get a reasonable amount of liquid into him plus he eats masses of fruit. However, if we do not supply him with a drink every 2/3 hours he becomes a nightmare and I mean a real nightmare. When drink is supplied there is usually a very rapid improvement within minutes if not seconds. It just seems really strange that he is so sensitive to lack of drink so wondered if there could be an underlying, medical cause. Any ideas welcome.