In the central nervous system, direct damage of the brain cells and disturbances of neurotransmissions causes altered mental status. Cytokines such as tumor necrosis factor, interleukin 1, and interleukin 6 may activate procoagulation factors in the cells lining blood vessels, leading to endothelial damage. The damaged endothelial surface inhibits anticoagulant properties as well as increases antifibrinolysis, which may lead to intravascular clotting, the formation of blood clots in small blood vessels, and multiple organ failure.The low blood pressure seen in those with sepsis is the result of various processes, including excessive production of chemicals that dilate blood vessels such as nitric oxide, a deficiency of chemicals that constrict blood vessels such as vasopressin, and activation of ATP-sensitive potassium channels. In those with severe sepsis and septic shock, this sequence of events leads to a type of circulatory shock known as distributive shock. Diagnosis
Early diagnosis is necessary to properly manage sepsis, as the initiation of rapid therapy is key to reducing deaths from severe sepsis. Some hospitals use alerts generated from electronic health records to bring attention to potential cases as early as possible. Within the first three hours of suspected sepsis, diagnostic studies should include white blood cell counts, measuring serum lactate, and obtaining appropriate cultures before starting antibiotics, so long as this does not delay their use by more than 45 minutes. To identify the causative organism(s), at least two sets of blood cultures using bottles with media for aerobic and anaerobic organisms are necessary.
certain smells, specifically coffees, cigarettes, onions, and perfumes, induced a "nauseating" odor for the patient, which was artificial and  unrelated to a known smell. In another case study cited in the same paper, a woman had parosmia in one nostril but not the other. Medical examination including MRI did not reveal any abnormalities; however the parosmia in this case was degenerative, getting worse in time. The authors report that cases of parosmia can predict regeneration of olfactory senses. Treatment
Symptoms of most patients afflicted with parosmia decrease over time. Although there are instances of parosmia affecting patients for years, this is certainly not the majority of cases. There have been experimental treatments of parosmia with L-Dopa, but there are no other current treatments except inducing anosmia or hyposmia to the point that the odors are negligible. See also
Phantosmia, perceiving smells not objectively present

References
External links

ECU
"Signs and symptoms, etiologies and clinical course of parosmia + in a series of 84 patients"
WebMD