What are common signs of infection?

Common signs of infection typically encompass a range of symptoms that indicate the body's response to an infectious agent. The presence of fever, redness, and swelling signifies an inflammatory response, which is a fundamental reaction of the immune system to infection. Fever often indicates that the body is fighting off an infection, while redness and swelling result from increased blood flow and fluid accumulation in affected tissues.

Additionally, drainage, foul odor, and malaise are also critical indicators of infection. Drainage, particularly if it is purulent, suggests that there may be an abscess or other serious infectious process. A foul odor can be a sign of necrotic tissue or certain bacterial infections. Malaise, or a general feeling of discomfort and unease, typically accompanies infections as the body expends energy to fight off the invading pathogens.

Therefore, the selection of all of the above accurately reflects the variety of signs that can suggest an infection, as both sets of symptoms stem from the body's immune response and various types of infections. Recognizing these signs is essential for prompt diagnosis and treatment to prevent complications.