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By Mayo Clinic staffDiabetes insipidus can cause your body to retain an inadequate amount of water to function properly, and you can become dehydrated. Dehydration can cause:
- Dry mouth
- Muscle weakness
- Low blood pressure (hypotension)
- Hypernatremia
- Sunken appearance to your eyes
- Fever or headache, or both
- Rapid heart rate
- Weight loss
Diabetes insipidus can also cause an electrolyte imbalance. Electrolytes are minerals in your blood — such as sodium, potassium and calcium — that maintain the balance of fluids in your body. Electrolyte imbalance can cause symptoms, such as headache, fatigue, irritability and muscle pains.