my son is 8 yrs old and was diagnosed June of 2015 with Moderate autism with adhd and echolalia, moderate intellectual disability, and PICA with an iq of 56. my problem is that he is obsessed with getting drinks to the point were he drinks from the toilet! The toilet drinking habit has been going on since he was probably 2! no metter what we do and how much he drinks he always finds a way to get a drink! He wets the bed at night to the point where his head is soaked. he wears a pullup and has hospital mattress. we have had him tested for diabietes 2 times but dont know what else to do about this problem!!! we have giving him water bottles at school and he drinks it in 5 minutes then is demanding more! last 2 times we have went to this office in town he has begged people to give him drinks even though i told him he didnt need one(he just had one before we walked in door both times), then oday we go to same office and i told him as soon as we got there he wasnt getting anything, so when my head was turned he went to the bathroom without telling or asking me and i caught him drinking from toilet!!!! what do we do????????????????????????