Cimex lectularius is the scientific name for the common bed bug, a blood-sucking insect known for hiding in mattresses, bedding, and other household items. While "bed bug" is the most common term used to refer to these pests, there are other synonyms that can be used interchangeably. These include "wall louse," "mahogany flat," and "red coat." In some parts of the world, bed bugs are also referred to as "mattress bug," "bed louse," or "creeping bug." Regardless of the term used, bed bugs are a nuisance and can cause itching, irritation, and allergic reactions in humans. It is essential to take measures to prevent and eliminate infestations to maintain a healthy living environment.