Sepsis is the result of an infection, and causes drastic changes in the body. It can be very dangerous and potentially life-threatening. It occurs when chemicals that fight infection by triggering inflammatory reactions are released into the bloodstream. It is thought that the inflammation resulting from sepsis causes tiny blood clots to form. This can block oxygen and nutrients from reaching vital organs. Severe sepsis is defined as sepsis with evidence of organ damage that usually affects the kidneys, heart, lungs, or brain.
A bacterial, fungal, or viral infection can cause sepsis. Any of the infections may begin at home or while you are in the hospital for treatment of another condition.