Which are the symptoms of Diabetes insipidus?

The extreme thirst & constantly needing to use the toilet, also low sodium is the worst for me I always in up in hospital

Thirst that won't go away no matter how much you drink.
Also the feeling when you have to go to the bathroom.. Not only that you go all the time but the feeling is so much stronger, emidiatly, than when you are on medication.

Polyuria

Insatiable thirst and constant need to urinate when medication runs out.

Excessive and at times, insatiable thirst. Frequent urination. People misunderstanding and thinking you are drinking so much water and using the restroom often to get attention (especially in a school setting). Also, it is VERY frustrating to explain to people that DI has ABSOLUTELY NOTHING to do with insulin. It is unfortunate that culturally, the word "diabetes" is often only recognized in association with diabetes mallitus type I and type II. DI also has different types and it is frustrating that people who have it don't always even know what kind they have. There is Central Diabetes Insipidus and Nephrogenic Diabetes Insipidus. Central Diabetes Insipidus (CDI) originated in the hypothalamus and pituitary and has to do with the body's inability to create the appropriate amount of anti diuretic hormone (ADH). You can be born with CDI or acquire it from brain trauma. Nephrogenic Diabetes Insipidus (NDI) has to do with the kidney's inability to properly utilize ADH. Symptoms of CDI and NDI are practically identical and can both be managed by taking a synthetic form of ADH, called desmopressin or DDAVP. Desmopressin comes in a nasal spray or a pill form.