Type 1 diabetes: Frequent urination, unusual thirst, extreme hunger, unusual weight loss, extreme fatigue, irritability. Type 2 diabetes: Any of the type 1 symptoms frequent infections, blurred vision, cuts or bruises, tingling or numbness in the hands or feet, recurring skin, gum, or bladder infections.
Sociopaths are often unable to control their behavior and their expressions of annoyance, irritability and threats when faced with situations not appealing to them and they often tend to resort to threats, aggression and verbal abuse.
This website summarizes some of the common features of descriptions of the behavior of sociopaths. They never recognize the rights of others and see their self-serving behaviors as permissible. They appear to be charming, yet are covertly hostile and domineering, seeing their victim as merely an instrument to be used.