Which category of drugs is primarily involved in managing fluid balance in the body?

Diuretics are a category of drugs primarily involved in managing fluid balance in the body. These medications work by promoting the elimination of excess fluid and sodium through the kidneys, causing increased urine output. This mechanism is essential in treating conditions such as hypertension, heart failure, and edema, where fluid retention is a concern. By controlling fluid levels, diuretics help reduce blood pressure, decrease swelling, and improve overall heart function.

The other categories do not primarily focus on fluid balance management: Dermatologicals are used to treat skin conditions, Electrolytes are minerals important for various bodily functions but are not medications themselves, and Cardiovascular drugs encompass a broad range of medications aimed at treating heart conditions, which may include some diuretics but do not solely focus on fluid balance.