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Doctor insights on: Unexplained Recurrent Fevers

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What is the cause for recurrent fevers in a one year old?

What is the cause for recurrent fevers in a one year old?

Variable: The average 1yo is expected to get 5-7 respiratory viruses /yr and 2-3 diarrhea viruses/yr. These are often set apart buy periods of weeks of good health. A chronic on /off fever lasting days to weeks is usually a sign of a significant problem & needs a full evaluation and testing. ...Read more

Dr. Mark Diamond
2,227 doctors shared insights

Fever (Definition)

Fever is the temporary increase in the body's temperature in response to some disease or illness. A child has a fever when the temperature is at or above one of ...Read more


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Unexplained fevers and chills for more than 3 weeks, what may be possible cause?

Unexplained fevers and chills for more than 3 weeks, what may be possible cause?

Many: Including a variety of infections, a host of non- infectious inflammatory conditions and some malignancies. See your doctor to help sort it out. ...Read more

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If someone has lymphoma and have recurrent fevers. Would it be like 99.0-99.0 or above 100.4 ? What's concerning? And if 99.5 occurred with nodes

If someone has lymphoma and have recurrent fevers. Would it be like 99.0-99.0 or above 100.4 ? What's concerning? And if 99.5 occurred with nodes

Life is not exact: Life is not exact. A person at home can measure his temperature in whole numbers. Thermometers are not exact. Human bodies are not exact. So, if one is wondering what to tell the doctor, just use whole numbers. Also, every person is different, so "recurrent fevers" can vary from time to time in one person, and vary among different people. There is no exact number. A couple of doctors can evaluate. ...Read more

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What are the different reasons for an unexplained fever in a 25 year old?

What are the different reasons for an unexplained fever in a 25 year old?

4 categories.: If the fever (t>100.5) has been present for 3 weeks or more and has defied reasonable attempts to explain, the most likely cause of the fever will eventually be "unexplained." another 20% of patients will eventually be found to have an inflammatory cause, another 20% will be found to have an occult infection and 10% will be found to have a malignancy. ...Read more

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Does Mono cause recurrent high fevers every few weeks with no other symptoms?

Does Mono cause recurrent high fevers every few weeks with no other symptoms?

Doubtful.: That is not typical of mono. Please see your doc and get checked and find out what is going on. ...Read more

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I have been getting recurrent fevers but my blood work is all normal. Do you know what this could be?

I have been getting recurrent fevers but my blood work is all normal. Do you know what this could be?

Autoimmune disease: Unexplained recurrent fever can be a sign of hidden infection, cancer, or autoimmune disease like lupus or rheumatoid arthritis. Common medications can also cause recurrent fever. You need a doctor who is a sleuth. The timing of your fevers, medical history, exposures to animals, medications, and physical exam findings will give clues. Look up "fever of unknown origin" for more info. ...Read more

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My son age 3 has recurrent croup never has a fever and just comes out of the blue, and always requires epi and dex to help im trying to find a trigge?

My son  age 3 has recurrent croup never has a fever and just comes out of the blue, and always requires epi and dex to help im trying to find a trigge?

Classic croup is: caused by a virus,which causes swelling in the upper airways.There is no vaccine or way to become immune to the virus.Generally, children "outgrow" croup as their airways become larger.Or...perhaps this isn't croup, but is a form of asthma,which could be triggered by an allergen,virus,or cold weather.If he has not had an allergy workup,it may be time.Then there may be meds to take to prevent it. ...Read more

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I have been diagnosis with unexplained fevers by my gp. I have had all the tests they have and all were negative. I get these fevers on a weekly/monthly.

I have been diagnosis with unexplained fevers by my gp.  I have had all the tests they have and all were negative.  I get these fevers on a weekly/monthly.

ID Doc referral-: Your case is the type that merits a referral to an outpatient infectious diseases specialist. However, it will be important to gather all the data- progress notes , lab results, rafiology readings, culture results- and organize it in chronologically, as well as writing your history of present illness down on paper. This will go a long way to help your specialist. ...Read more