Shortness of breath or breathlessness may result from a range of pulmonary, cardiac and central nervous system causes. It is important to look for the underlying cause for immediate intervention.
Fever is abnormal elevation of body temperature that occurs as part of a specific biologic response that is mediated and controlled by central nervous system and is usually a symptom of an infection.
Shock is a state of acute circulatory failure leading to decreased organ perfusion, with inadequate delivery of oxygenated blood to tissues and resultant end-organ dysfunction and it is an emergency condition.