took ds 18months to hospital last week for a few days for tests, it was awful. overnight he was allowed no fluid then again the following day because his urine doesnt concentrate.he had to have blood taken, urine samples and be weighed hourly. initially the docs thought it was habit and his kidneys had got lazy. ive had to restrict his fluid to 3pints a day and measure it exactly so as not to go over and take urine samples to the hospital every morning. its still not concentrating and they are flumaxed because diabetes insipidus is very rare especially in children. theres a meeting about him tomorow and i have to wait for the phone call late afternoon to see what they going to do next. lots of mners have been lovely when ive posted about this problem before so thought id give an update