E70-E90: Metabolic disorders

E87: Other disorders of fluid, electrolyte and acid-base balance

The group of conditions referred to as "Other disorders of fluid, electrolyte and acid-base balance" are medical problems that occur when the body's normal balance of fluids, electrolytes (chemicals like sodium, potassium, and calcium), and acids and bases are disrupted. This can happen for a variety of reasons, such as kidney disease, certain medications, severe vomiting or diarrhea, or an imbalance in hormone levels. Common symptoms can include fatigue, confusion, muscle weakness, irregular heartbeats, and in severe cases, seizures or coma. These conditions can often develop gradually but can also occur rapidly, depending on the underlying cause. They can affect various systems in the body, particularly the kidneys, heart, and nervous system, and can potentially lead to serious, even life-threatening complications if not addressed promptly.