A fever of Unknown Origin or FUO is where the body temperature is 101°F that occurs frequently or lasts for over three weeks. Early diagnosis of the condition is always recommended.
Types of Fevers Of Unknown Origins
Classic
People who were previously healthy are mostly affected by classic FUO. Some common causes of this FUO include neoplasms or infections like leukemia, or disease affecting the connective tissue.
Nosocomial
This type of FUO is seen due to hospitalization. The patient is hospitalized for some other reason but experiences unexplained fever. The common causes of nosocomial FUO include sinusitis, enterocolitis, pulmonary embolism, deep vein thrombosis or septic thrombophlebitis.
HIV-associated
HIV causes unexplained fevers frequently, and the affected person is also at risk of other infection, causing fevers.
Causes of Fevers Of Unknown Origins
- Infections like endocarditis, tuberculosis, mononucleosis, etc.
- Malignancy like pancreatic carcinoma, leukemia, lymphoma, and other sarcomas and cancers
- Inflammation like rheumatoid arthritis, IBS (Inflammatory Bowel Disease), lupus, etc.
- Other miscellaneous health issues.
Symptoms of Fevers Of Unknown Origins
The symptoms of CVDs are based on its type. We have mentioned the most common signs and symptoms for you to reach out for medical help.
- Body temperature exceeding 99.5°F for children and adults or 100.4°F for babies
- Headaches
- Weakness
- Body or joint aches
- Sinus congestion
- Fatigue
- Rashes
Diagnosis and Treatment
If the fever continues for more than three days, you must see a doctor and get a proper diagnosis as it can be an FUO. The general physician will carry out some tests to understand the cause of your fever and get the treatment started based on the symptoms.
