Reference
Infection
An infection is an illness caused by microbes such as bacteria or viruses, which can raise body temperature and lead to sweating. Fever-related sweating is a common part of the body's response.
As the body fights an infection, its temperature may rise and fall, and sweating often accompanies the falling phase as heat is shed. This is why fevers can bring bouts of sweating, sometimes overnight. Certain infections are particularly associated with night sweats. Sweating that comes with fever, chills, or other signs of illness points toward an infection and may need medical attention. The sweating here is the body's cooling response as a fever breaks rather than a problem in itself. Its link to other symptoms of illness helps separate it from everyday sweating. A fever works by resetting the body's temperature target higher for a time. When that target drops back, the body sheds the extra heat by sweating. This is why chills often come first and sweating follows as the fever eases.
An infection is an illness caused by microbes such as bacteria or viruses, which can raise body temperature and lead to sweating. Fever-related sweating is a common part of the body's response.
What infection means
As the body fights an infection, its temperature may rise and fall, and sweating often accompanies the falling phase as heat is shed. This is why fevers can bring bouts of sweating, sometimes overnight. Certain infections are particularly associated with night sweats. Sweating that comes with fever, chills, or other signs of illness points toward an infection and may need medical attention. The sweating here is the body's cooling response as a fever breaks rather than a problem in itself. Its link to other symptoms of illness helps separate it from everyday sweating. A fever works by resetting the body's temperature target higher for a time. When that target drops back, the body sheds the extra heat by sweating. This is why chills often come first and sweating follows as the fever eases.
In practice
Waking drenched in sweat while running a fever during a flu-like illness illustrates infection-related sweating. The sweat often appears as the fever falls, showing the body shedding heat, and it comes bundled with other signs like chills or aches. A person shivering one hour and sweating the next is experiencing the fever cycle that many infections produce.
Frequently asked questions
Why does an infection make you sweat?
Infections can raise body temperature. Sweating then helps shed heat, especially as a fever falls back toward normal.
Can an infection cause night sweats?
Yes. Some infections are associated with heavy sweating during sleep. It often appears alongside fever or other symptoms of illness.
Sources & further reading
Reputable organizations with more on sweating and related topics. Offered for further reading and general education, not as citations for any specific claim on this page.
General educational information about sweating. Not medical advice, and not a substitute for diagnosis or treatment by a qualified healthcare professional.