Bacterial infections can be classified into several types based on their location and severity. Common types include skin infections, such as cellulitis, which affect the outer layers of skin, and respiratory infections, like pneumonia, which impact the lungs. Other types include urinary tract infections (UTIs) and gastrointestinal infections, which can cause symptoms like diarrhea and abdominal pain. In addition to these, bacterial infections can be categorized as either localized or systemic. Localized infections are confined to a specific area, while systemic infections spread throughout the body, potentially leading to serious conditions like sepsis. Understanding these types helps in effective diagnosis and treatment.