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Causes Of Fever At Night You Probably Didn't Know
Many times, you may get a fever at night, while feeling fine during the day. As a result, you may experience restless nights and may feel fatigued in the morning as well.
The symptoms of fever at night should be checked first if you are experiencing a fever at night. There may be symptoms such as a loss of appetite, irritability, general weakness, dehydration, sweating, headaches, chills, and shivering.
There are apparent causes that you can avoid to get rid of the frequent night fevers. Let's take a look at what causes high fever only at night.
Causes Of Fever At Night
1. External Pyrogens
Pyrogens (fever-inducing substances) that enter your body externally and try to penetrate your body are one of the reasons that cause high fever only at night. You will see that these pyrogens tend to produce toxins that can be harmful to your health [1].
Within the body, these pyrogens are produced as a result of monocytes and macrophages. When external pyrogens enter the body, they induce the body to produce its own pyrogens, thus resulting in feverish conditions [2].
2. Upper Respiratory Tract Infections
Cold and other respiratory tract infections are probable causes of fever at night. Sometimes, it is just a common cold that affects your body to cause fever at night; other times, it can also be an infection of the larynx, bronchi or trachea that can cause major respiratory tract infections and, in effect, cause fever that develops only at night [3].
Common cold lasts for a few days, while other infections depend on the patient's immunity and general time period.
3. Urinary Tract Infections
You may also experience fever only at night when you have urinary tract infections. Very sharp pain in the urinary tract, along with the presence of toxins, can lead to fever. It is important to consult a doctor in this case. In case you have a urinary tract infection, it can be treated with medication and proper check-ups [4][5].
4. Skin Infections
In many cases, fever at night is due to skin infections [6]. If there are major infections present on your skin that have been persistently bothering you, you will need to get them checked, as these are some of the major causes of night fever.
5. Inflammation
In case there is inflammation in your body due to allergic reactions to the medicines, chances are you will get a fever at night. It could be a plain allergy that can cause major reactions, so make sure you get it checked as soon as possible [7].
6. Connective Tissue Disorders
In some cases, connective tissue disorders can cause fever at night. These could include rheumatoid arthritis, giant cell arteritis, systemic lupus erythematosus, polyarteritis nodosa, polymyositis, and dermatomyositis [8].
7. Bacterial Infections
An infection caused by bacteria or fungi can be infective endocarditis, tuberculosis, or other occult long-term infection that can also cause night fever.
Why Does This Fever Disappear In The Morning?
As experts point out, during the day, your immune cells are functioning at full capacity, reducing your risks of developing a fever or a cold.
But during the night, the immune cells get less active, increasing your body's temperature in hopes of killing the bacteria/infections present in your body - which is termed as a temporary fever by doctors [9].
Probably the main reason fever seems worse at night is that it actually is worse. The inflammatory response mechanism of the immune system is amplified; that is, your immune system raises your body temperature as part of its strategy to kill the virus attacking you - triggering hot flashes and chills at night [10].
On A Final Note...
Inflammatory diseases include Crohn's disease, pancreatitis, phlebitis, thyroiditis, ulcerative colitis, etc., endocrine and metabolic disorders like thyroid disease, blood disorders like aplastic anaemia and leukaemia can also cause night fever for some people.
Disclaimer: The information provided in this article is for general informational and educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or a qualified healthcare provider with any questions you may have regarding a medical condition.
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