When I was first diagnosed with thyroid cancer, I didn't feel any odd lumps or nodules in my neck, but I was suffering from muscle weakness, tiredness and getting constant colds. After a particularly nasty bug I noticed that my lymph nodes never seemed to go down in size.
SIRS is nonspecific and can be caused by ischemia, inflammation, trauma, infection, or several insults combined. Thus, SIRS is not always related to infection. Venn diagram showing overlap of infection, bacteremia, sepsis, systemic inflammatory response syndrome (SIRS), and multiorgan dysfunction.
Causes: Reye's Syndrome: A reaction to a viral infection that usually occurs when recovering from a virus. The cause of RS remains a mystery. However studies have shown that using aspirin or salicylate-containing medications to treat viral illnesses increases the risk of developing RS.