Fever
Fever might appear in patients having pulmonary embolism but it rarely exceeds 38°C and is of low-grade. The occurrence of fever in pulmonary embolism patients is might be due to an infection resulting from the blockage of blood vessels in lungs. Fever due to pulmonary embolism usually lasts for short time and gradually disappears within one week by reaching its peak the day of pulmonary embolism diagnosis. The medical specialists are still understanding the pathogenesis behind the occurrence of fever due to pulmonary embolism but it is one of the least disturbing symptoms of the condition.