Infections occur when harmful microorganisms like bacteria, viruses, yeast, fungi, or parasites invade the body and begin to multiply. These invaders can affect any part of the body and can lead to a wide variety of symptoms depending on the type of infection and the area affected.
For example, bacterial infections might cause symptoms like fever, fatigue, and localized pain, while viral infections can result in symptoms ranging from mild, like a common cold, to severe, like pneumonia.
Infections often trigger an inflammatory response as the body's immune system works to eliminate the invaders. Inflammation is a natural defense mechanism that helps isolate and destroy harmful microorganisms. However, inflammation also leads to common symptoms of infection, such as redness, swelling, warmth, and pain in the affected area.
While inflammation is essential for fighting off infections, excessive or prolonged inflammation can damage the body's own tissues and lead to chronic inflammatory conditions.
Understanding the nature of infections and their potential impact on the body is crucial for effective diagnosis and treatment. By recognizing the symptoms and seeking medical attention early, patients can avoid the more serious complications that untreated infections can cause.
Common infections that may need imaging tests include abscesses and cellulitis.