Viral fever could be associated with decreased oxygen levels (oxygen saturation, SpO2). As the body temperature rises, oxygen saturation drops, reducing oxygen supply to the lungs and breathing difficulties or lung damage. The oxygen saturation should not dip beyond 94% for a prolonged duration. Otherwise, it could lead to some significant damage to lung tissues, and an oxygen mask may be required to meet the oxygen demand to keep the lungs intact. You can monitor your oxygen saturation levels with a pulse oximeter. For more information on viral fevers and management, consult our medical experts.