Signs and symptoms

    * Early symptoms may be nothing more than chronic fatigue, generalised weakness and malaise (feeling of unease)
    * Excessive urine production
    * Excessive thirst and increased fluid intake
    * Blurred vision (typically from lens shape alterations, due to osmotic effects, e.g., high blood glucose levels)
    * Unexplained weight loss
    * Lethargy
    * Itching of external genitalia