How did the electrolyte imbalance happen?

Electrolyte disorder is due to the total number of anions and cations in human body fluids is not equal to the total number of electrolytes, there is a change in the number of electrolytes lead to different body damage, is the phenomenon of electrolyte disorder. Often appear in long-term diarrhea, nausea, vomiting, malnutrition and other patients.