Fever: Causes & Reasons

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Possible Causes for Fever

Common Cold

Common cold and flu are the most common human illnesses, and over-the-counter (OTC) analgesics are widely used to treat the pain and fever symptoms. [ncbi.nlm.nih.gov]

But seek medical attention right away if your child has any of the following: Fever of 100.4 F (38 C) in newborns up to 12 weeks Rising fever or fever lasting more than two [mayoclinic.com]

There is also no evidence that these medicines prolong the course of colds and flu by any effect on the immune system or by reducing fever. [ncbi.nlm.nih.gov]

Acute Gastroenteritis

Rotovirus, low grade fever, malaise, nausea and vomiting as well as diarrhea. 5. [slideshare.net]

It has been suggested that high fever is generally caused by bacteria, while mild fever indicates viral gastroenteritis. [symptoma.com]

This disease is characterized by vomiting and/or diarrhea with blood or mucus, discomfort, fever, and nonspecific abdominal pain. [ncbi.nlm.nih.gov]

Acute Bronchitis

Mild fever may be present, but high or prolonged fever is unusual and suggests influenza or pneumonia. [merckmanuals.com]

Call your provider if you: Have a cough on most days, or have a cough that keeps returning Are coughing up blood Have a high fever or shaking chills Have a low-grade fever [nlm.nih.gov]

The most common symptom is cough, with or without fever, and possibly sputum production. Diagnosis is based on clinical findings. [merckmanuals.com]

Viral Upper Respiratory Infection

In viral nasopharyngitis patients have profuse nasal discharge, fever, halitosis, mouth breathing leading to dry mouth, hyposmia, sneezing and odynophagia, symptoms that occur [symptoma.com]

She presented with fever and stridor and developed sepsis and multiorgan failure. She was treated with antibiotics to no effect and died 14 days after hospitalisation. [pure.au.dk]

We report the cases of eight military patients with fever (≥38°C) induced by viral upper respiratory tract infection (URTI) who requested treatment with acupuncture in the [ncbi.nlm.nih.gov]

Upper Respiratory Infection

Fever may be present, but it is not typical in persons with croup. Fever may be seen with influenza laryngitis. [emedicine.medscape.com]

Seek medical attention when you have a fever that is greater than 100.4°F or 38°C, fever unresponsive to fever reducer, fever present for more than two to three days, or a [campushealth.unc.edu]

Cough is usually dry and associated with fever, headache and body aches. [symptoma.com]

Urinary Tract Infection

Enteric fever caused by Salmonella Typhi is a global public health problem. [ncbi.nlm.nih.gov]

In babies, the most common signs include fever, irritability, vomiting and diarrhea, poor feeding, and failure to gain weight, but most babies will just have a high fever [childrenshospitaloakland.org]

A baby with a UTI may have a fever, throw up, or be fussy. Older kids may have a fever, have pain when peeing, need to pee a lot, or have lower belly pain. [kidshealth.org]

COVID-19

A woman in her 40s, in Japan: Day #1: low-grade fever Day #2: 38° fever Day #6: being treated at home. [worldometers.info]

Since one day high fever. [radiologyassistant.nl]

What is commonly observed is that patients suffering from coronavirus have high-grade fever while those with common flu suffer from mostly cough and low-grade fever. [ahmedabadmirror.indiatimes.com]

Adenovirus Infection

[…] period of 1-14 days, whereas rhinitis, fever, and cervical lymphadenopathy are typical for pharyngoconjunctival fever (PCF). [symptoma.com]

The elder brother developed a high fever and was diagnosed with HAdV infection with an immunochromatographic kit for HAdV (IC-kit). [ncbi.nlm.nih.gov]

RSV, influenza, parainfluenza Acute pharyngoconjunctival fever Spiking fever, headache, pharyngitis, conjunctivitis (typically unilateral), rhinitis, cervical adenitis Subsides [unboundmedicine.com]

Viral Disease

The fever may be low grade or high grade and remittent. [webhealthcentre.com]

Inclusion criteria included fever > 37.5 °C, symptom duration ≤ 12 days, and presentation with respiratory infection or fever without source. [ncbi.nlm.nih.gov]

Shaiful Hassan Shameem has been struggling to bring his fever down. [bdnews24.com]

Tonsillitis

If the sore throat is due to a streptococcus infection, there may be a rash ( scarlet fever ). [netdoctor.co.uk]

Other symptoms of pain and fever can be treated with mediations. [symptoma.com]

Lancefield's GABS can cause rheumatic fever, Sydenham's chorea, glomerulonephritis and scarlet fever. Streptococcal infection may cause a flare-up of guttate psoriasis. [patient.info]

Sinusitis

"Headache and fever" is a common presentation to the urgent care and emergency department setting and can have many etiologies. [ncbi.nlm.nih.gov]

Fever isn't a common sign of chronic sinusitis, but you might have one with acute sinusitis. [mayoclinic.com]

You have a fever. You still have symptoms after taking all of your antibiotics properly. You have any changes in your vision during a sinus infection. [nlm.nih.gov]

Acute Respiratory Infection

OBJECTIVES: This study aims to (1) estimate the prevalence of acute respiratory infection (ARI) symptoms, diarrhoea and fever in the previous two weeks among 3-4 year old [ncbi.nlm.nih.gov]

[…] respiratory symptoms) and acute febrile illness (AFI; fever without respiratory or other localizing symptoms) patients from three referral hospitals in Ghana. [ncbi.nlm.nih.gov]

FEEL FEVER OR LOW BODY TEMPERATURE 6. CHECK FOR SEVERE MALNUTRITION 7. [slideshare.net]

Pharyngitis

Temperature: Fever is usually absent or low-grade in viral pharyngitis, but fever is not reliable to differentiate viral or bacterial etiologies. [web.archive.org]

Rheumatic fever defined by clinical diagnosis. [doi.org]

Children usually present with diarrhea, loss of appetite, conjunctivitis, cough, and fever as high as 105 F. [symptoma.com]

Hypersensitivity

Hay fever, respiratory allergies, and other allergies affect approximately 10 percent of children under 18 years old. [web.archive.org]

This leads to the characteristic hay fever symptoms, such as itchy eyes and sneezing. [newscientist.com]

plus another systemic symptom) and a third consisted of fever plus rash alone. [aidsmap.com]

Streptococcal Infection

Rarely, the pharyngitis is associated with scarlet fever. [symptoma.com]

We described a 21-year-old Japanese patient with sore throat, fever, and diffuse erythema on the neck, trunk, and limbs. [ncbi.nlm.nih.gov]

Scarlet fever is uncommon today, but outbreaks still occur. [msdmanuals.com]

Acute Sinusitis

The patient experienced photophobia, fever, headache, nausea and vomiting. Frontal sinusitis with intracranial abscess was diagnosed on imaging. [ncbi.nlm.nih.gov]

– Fever is usually mild or absent. [medicalguidelines.msf.org]

Children may experience one to two days of fever, accompanied by constitutional symptoms, such as fatigue, headache, decreased appetite, and myalgia. [mdedge.com]

Sunburn

There is no quick cure for minor sunburn: Symptoms can be treated with aspirin, acetaminophen, or ibuprofen to relieve pain and headache and reduce fever. [cdc.gov]

Do you have more than a mild fever? A mild fever is common with sunburn. Home treatment usually is all that's needed for a mild fever. [uofmhealth.org]

Fever. [healthlinkbc.ca]

Hay Fever

What causes hay fever? [web.archive.org]

At the same time there is a worldwide increase in asthma and hay fever. [ncbi.nlm.nih.gov]

Read More on This Topic respiratory disease: Hay fever Hay fever is a common seasonal condition caused by allergy to grasses and pollens. [britannica.com]

Female Pelvic Inflammatory Disease

They may also exhibit signs such as intermittent or post-coital bleeding, vaginal discharge, or fever. [web.archive.org]

In severe PID, women appear very ill with fever, chills, purulent vaginal discharge, nausea, vomiting, and elevated white blood cell count (WBC). [web.archive.org]

Influenza

Individuals with influenza were more likely to have cough (93% vs 80%), fever (68% vs 40%), cough and fever together (64% vs 33%), and/or nasal congestion (91% vs 81%) than [archinte.ama-assn.org]

Individuals with influenza were more likely than those without influenza to have baseline cough (93% vs 80%), fever (68% vs 40%), and cough and fever together (64% vs 33%) [archinte.ama-assn.org]

7 The PPV rose even further as the height or degree of fever at recruitment increased. [archinte.ama-assn.org]

Cholelithiasis

The pain lasts longer than 6h and is usually associated with nausea/vomiting, fever and right upper quadrant pain. [sketchymedicine.com]

When this happens, a child may have abdominal pain and nausea, vomiting or fever. How do gallstones form? [childrenshospital.org]

Usually have abnormalities in liver enzymes and pain but no fever. The 2 major complications are 1) Cholangitis and 2) Acute pancreatitis. [sketchymedicine.com]

Salpingitis

Pain, fever, and leukocytosis resolved with conservative surgery and intravenous antibiotic therapy. [ncbi.nlm.nih.gov]

Fever 4. Pelvic mass on physical exam/ultrasound Fitz-Hugh and Curtis syndrome? [brainscape.com]

[…] activity, had a remote history of an appendectomy, and a recent diagnosis of a large, right-sided ovarian cyst, who presented with acute abdominal pain, urinary symptoms, and fever [ncbi.nlm.nih.gov]

Toxoplasmosis

After some time, the baby presented fever and cervical lymphadenitis. [ncbi.nlm.nih.gov]

Sheep Lambs affected after birth show fever and dyspnoea. [lrd.spc.int]

Symptoms in people with otherwise healthy immune systems can include: Enlarged lymph nodes in the head and neck Headache Fever Mild illness similar to mononucleosis Muscle [nlm.nih.gov]

Otitis Media

The combination of these signs with ear pain or fever confirms the diagnosis of AOM. [medicalguidelines.msf.org]

[…] the following: Labyrinthitis - Fever, nystagmus, serous or suppurative otitis media Mastoiditis with subperiosteal abscess - Fever, fluctuance overlying the mastoid area, [emedicine.com]

[…] persistent or intermittent fever associated with ear pain is suggestive of acute otitis media Fever persistent or intermittent fever associated with ear pain is suggestive [medicaljoyworks.com]

Pneumonia

Or, they may vomit, have a fever and cough, or appear restless, sick, or tired and without energy. [lung.org]

Chest radiograph improvement and symptom improvement, including fever and respiratory symptoms, was observed after 2 week of oral prednisolone treatment. [ncbi.nlm.nih.gov]

A week later, she was again admitted with fever. [ncbi.nlm.nih.gov]

Acute Otitis Media

The combination of these signs with ear pain or fever confirms the diagnosis of AOM. [medicalguidelines.msf.org]

Hearing symptoms were common (67%) but fever (32%) and retroauricular symptoms were uncommon in AOM. Fever (44%) and mastoid tenderness (65%) were common in AM. [ncbi.nlm.nih.gov]

Only fever was an exception, because children with bilateral AOM had fevers more often and fevers that were slightly higher. This was a new finding. [pediatrics.aappublications.org]

Infectious Mononucleosis

NHS Choices: Glandular Fever Information on this viral infection that can cause fever, sore throat, swollen lymph nodes and fatigue. [curlie.org]

Glandular fever (also known as infectious mononucleosis) is a type of viral infection that can cause fever, sore throat, swollen lymph nodes (glands) and fatigue. [web.archive.org]

Glandular fever mostly affects teenagers and young adults. [nhs.uk]

Respiratory Syncytial Virus Infection

[…] the highest fever during the period, and fever duration. [ncbi.nlm.nih.gov]

Respiratory syncytial virus disease must be considered in the differential diagnosis of fever and pulmonary infiltrates in immunocompromised adults. [ncbi.nlm.nih.gov]

The infant should be given plenty of fluids, as reduced appetite and fever can result in dehydration. [news-medical.net]

Subcutaneous Abscess

Note that generalized symptoms such as fever and chills do not occur with these simple abscesses. [symptoma.com]

[…] tenderness in the affected area warmth and redness in the affected area a visible build-up of white or yellow pus under the skin in the affected area a high temperature (fever [nhs.uk]

Symptoms Symptoms may include: Fever or chills, in some cases Local swelling around the infected spot Hardened skin tissue Skin lesion that may be an open or closed sore, [account.allinahealth.org]

Atelectasis

[…] traditionally associated with postoperative fever however, there is controversy regarding whether or not atelectasis actually causes fever infant respiratory distress syndrome [medbullets.com]

It is a common misconception that atelectasis causes fever. [en.wikipedia.org]

Fever: For unknown reasons atelectasis often results in development of early post-surgical fevers, usually 1-2 days post-operatively. [pathwaymedicine.org]