The difference between it and hyaline is that fibrous cartilage has a much denser matrix which contains far fewer chondrocytes and thicker collagen fibres. The main function of fibrocartilage is to serve as a shock absorber for structures where excessive pressures are generated.
Many of the symptoms that make a person suffer during an infection—fever, malaise, headache, rash—result from the activities of the immune system trying to eliminate the infection from the body. In response to infection, your immune system springs into action.