Low Fever: Causes & Reasons

Possible Causes for Low Fever

fever Diagnosis of common cold An upper respiratory infection can be diagnosed in a physical exam by your primary care provider, but it is typically identified easily by [mercy.com]

fever Chills Watery discharge from the nose that thickens and turns yellow or green Mild fatigue How is an upper respiratory infection diagnosed? [coppellfamilymedicine.com]

[…] common cold Symptoms of an upper respiratory infection include: Runny nose Nasal and head congestion Sore throat Cough Post-nasal drip Congestion Mild body aches Sneezing Low [mercy.com]

Post-COVID-19

[9] Many other symptoms have also been reported, including malaise, headaches, shortness of breath, anosmia (loss of smell), parosmia (distorted smell), muscle weakness, low [en.wikipedia.org]

fever and cognitive dysfunction.[10] Overall, it is considered by default to be a diagnosis of exclusion.[11] Estimates of the prevalence of long COVID vary based on definition [en.wikipedia.org]

fever Inability to concentrate (brain fog) Memory lapses Mental health problems, such as changes in mood or depression Sleep difficulties Headaches Joint pain Needle pains [en.wikipedia.org]

Rubella

A child with rubella typically has a measles-like rash and a low fever, although it's possible for a child to have the virus without showing any symptoms. [babycenter.com]

Some individuals may experience a mild reaction to the vaccination, such as local irritation at the injection site, low fever, rash and muscle aches. [news-medical.net]

Marazzi / Science Source Other symptoms include a low fever (between 100 and 101 degrees Fahrenheit) that lasts about 24 hours; a stuffy or runny nose; red, inflamed eyes; [babycenter.com]

Mumps

Other symptoms include low-grade fever, malaise, headache, and possible swelling of other salivary glands. The diagnosis of mumps is largely based on clinical findings. [amboss.com]

Symptoms of the mumps include low grade fever and swelling or tenderness in the salivary glands in the cheeks and under the jaw. [adultvaccination.org]

Officials said anyone who demonstrates symptoms such as: fever, headache, loss of appetite, low-grade fever, muscle ache, pain or discomfort, and tender and/or swelling of [fox46charlotte.com]

Mycoplasma Pneumonia

Clinical findings Incubation ± 3 weeks; insidious onset of fever, malaise, headache, myalgia, low-grade fever, cough, chest pain and respiratory disease, from asymptomatic [medical-dictionary.thefreedictionary.com]

More to Know Mycoplasma pneumonia is a less serious form of the lung infection pneumonia, and causes cold-like symptoms in addition to a low-grade fever and a hacking cough [kidshealth.org]

fever -- 99°F to 100.9°F (37.3°C to 38.3°C) Chills Runny nose Ear pain. [bacteria.emedtv.com]

Mycoplasma Infection

Symptoms of pneumonia due to M. pneumoniae are typically mild, including low-grade fever, tiredness, sore throat, and cough. [merckmanuals.com]

The symptoms generally develop slowly, over a period of two to four days, beginning with upper respiratory symptoms, low grade fever, malaise, and coughing. [jaxmed.com]

Varicella

Patients typically are afebrile or have low fever and develop fewer than 50 skin lesions. [web.archive.org]

Manifestations include a characteristic rash, fever, malaise and headache. The initial prodromal phase of varicella consists of malaise and low grade fever. [symptoma.com]

Illness is usually mild (low fever or no fever, fewer lesions [less than 50], less pruritic, shorter duration, absence of vesicles), although some patients present similar [visualdx.com]

Brain Abscess

She presented with headache, low-grade fever, and left-sided weakness 2 weeks after receiving the second dose of rituximab infusion. [ncbi.nlm.nih.gov]

fever. [ncbi.nlm.nih.gov]

Symptoms Patients may complain of headaches, low-grade fever, neck stiffness, and nausea or vomiting. Some will present with seizures or mental status changes. [neurosurgery.ufl.edu]

Tuberculous Peritonitis

A young American Indian male with alcoholic cirrhosis and ascites presented with low grade fever and weight loss. [ncbi.nlm.nih.gov]

A 13-year-old girl presented with non-specific symptoms of peritonitis, low grade fever and missed her normal menses. [ncbi.nlm.nih.gov]

Signs and symptoms of secondary peritonitis include: Abdominal pain; abdominal distention; fever; thirst; low urine output. There may also be signs of shock. [diagnose-me.com]

Infectious Mononucleosis

A low-grade fever occurs at first, and then rises to above 100 degrees after the third or fourth day. Sometimes, the liver and spleen are affected and enlarged. [infoplease.com]

Usually, the infection begins with a general feeling of illness (malaise) and low grade fever followed by sore throat and/or swollen lymph nodes. [msdmanuals.com]

The four main symptoms of EBV infectious mononucleosis are Extreme fatigue Fever Sore throat Not everyone has all four symptoms. [msdmanuals.com]

Influenza

Abstract A 39-year-old woman received a seasonal influenza vaccine in November 2015 and subsequently experienced malaise, low-grade fever, and chest discomfort. [ncbi.nlm.nih.gov]

Fever is not typical with a cold, but a low-grade fever isn’t out of the question. [everydayhealth.com]

Some flu symptoms may be similar to cold symptoms, including: Muscle or body aches A cough Runny or stuffy nose Itchy or watery eyes A sore throat Fatigue Low fever The [verywellhealth.com]

Chronic Fatigue Syndrome

Symptoms such as fatigue, pain, sleep disturbance, and low-grade fever were dramatically improved after 15 to 25 sessions of thermal therapy. [ncbi.nlm.nih.gov]

They initially developed a low grade fever and generalized fatigue, followed by sleep disturbance and psychosomatic symptoms, and their performance ability deteriorated. [ncbi.nlm.nih.gov]

Chronic Fatigue Syndrome Symptoms The signs are similar to flu-like symptoms: general weakness, exhaustion, achy muscles and joints, tender lymph nodes, low grade fever, headache [arthritis.org]

COVID-19

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]

Examples: Low-grade fever for 15 days or more sometimes is the only symptom of bacteremia by staphylococcus bacteria. [en.wikipedia.org]

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

Acute Sinusitis

They may develop a low-grade fever or their mucus may change to green or they may get worse after initial improvement. It’s time to see a doctor. [wakehealth.edu]

Fever can be of low grade or be absent. [antimicrobe.org]

Patients manifest low grade or non-resolving respiratory symptoms. Nasal discharge and daytime cough are common, while headache, facial pain and fever are variable. [antimicrobe.org]

Naphthalene Poisoning

These include headaches, confusion, drowsiness, jaundice, fever, low blood pressure or a racing heart rate. [sciencing.com]

Some people develop a fever and the symptoms get worse over time, which may include: Headache Convulsions Low blood pressure Jaundice Confusion Shortness of breath Urinary [magicofhealth365.com]

Other people develop a fever and the symptoms get worse over time, which may include: Confusion Convulsions Headache Low blood pressure Tachycardia or increased heart rate [stethnews.com]

Temporal Arteritis

Definition / general Sudden loss of vision in one eye, low grade fever, loss of appetite and general weakness May be due to obstruction of posterior ciliary artery Microscopic [pathologyoutlines.com]

It is also commonly associated with fatigue, low-grade fevers, and weight loss. [medicinenet.com]

Symptoms may include low-grade fever, muscle pain (myalgia), low levels of circulating red blood cells (mild anemia), and/or severe stiffness, especially in the morning or [rarediseases.org]

Chronic Phase of Chronic Myeloid Leukemia

Signs and Symptoms Diagnosis Treatment Most patients with CML initially visit their doctor because of: Fatigue Low-grade fevers or sweats Fullness in the abdomen caused by [ucsfhealth.org]

When symptoms do occur, they include pain in the left side due to an enlarged spleen, joint pain, hip pain, constant low grade fevers, susceptibility to infections, bruising [disability-benefits-help.org]

Signs and symptoms in the chronic phase are as follows: Fatigue, weight loss, loss of energy, decreased exercise tolerance Low-grade fever and excessive sweating from hypermetabolism [emedicine.medscape.com]

Lyme Disease

In 2007, at around age 19 years, I had an acute onset of sore throat, tonsillitis, low-grade fever, stiff upper back and neck muscles, migraines and severely stiff, cracking [ncbi.nlm.nih.gov]

A 26-year-old woman with a summer home on Long Island, New York, had a low-grade fever, malaise, arthralgias, headache, and neck pain one week after removing a tick from her [doi.org]

A low-grade fever, body aches and chills are common symptoms. But the new bacteria caused many of the patients to experience nausea and vomiting too. [startribune.com]

Brucellosis

A case is reported here of a 33-year-old woman with symptoms of night sweats, fever and low back pain. [ncbi.nlm.nih.gov]

On physical exam, he has a low-grade fever but otherwise a normal physical exam. [medbullets.com]

A 19-year-old man presented with a 2-week history of fever, sweating, low back and leg pain, lassitude, loss appetite, nausea and vomiting. [ncbi.nlm.nih.gov]

Ethmoid Sinusitis

Symptoms of a cold (runny nose and low fever) often give way to pain and pressure in the sinuses, which are usually the first signs of sinusitis. [humanillnesses.com]

Simple nasal congestion with a low-grade fever and a runny nose probably indicates a cold and may not call for medications or antibiotics. [emedicinehealth.com]

Low-grade fever may be periodic but is usually not prominent. [pediatrics.aappublications.org]

Pediatric Ulcerative Colitis

Other symptoms include: blood in the toilet, on toilet paper, or in the stool (poop) urgent need to poop a fever low energy weight loss Ulcerative coliits can cause other [kidshealth.org]

Other symptoms include: blood in the toilet, on toilet paper, or in the stool (poop) fever low energy weight loss Inflammatory bowel disease can cause other problems, such [kidshealth.org]

Chronic Myeloid Leukemia

Signs and Symptoms Diagnosis Treatment Most patients with CML initially visit their doctor because of: Fatigue Low-grade fevers or sweats Fullness in the abdomen caused by [ucsfhealth.org]

Symptoms of CML may include: Upper abdominal pain – hepatosplenomegaly Poor appetite – enlarged spleen may compress the stomach Low-grade fever/night sweats – increased metabolism [geekymedics.com]

Signs and symptoms in the chronic phase are: Fatigue, weight loss, loss of energy, decreased exercise tolerance Low-grade fever and excessive sweating Elevated white blood [symptoma.com]

Chronic Obstructive Pulmonary Disease

Systemic reactions include myalgia, fatigue, headache and low grade fever. [dx.doi.org]

[…] aches A serious flare-up can lead to a dangerously low level of oxygen in your blood (a condition called acute respiratory failure). [merckmanuals.com]

LDI occurred in only 10% of these patients, however, indicating a low positive predictive value of this symptom complex for LDI. [dx.doi.org]

Maxillary Sinusitis

fever of unclear origin, and diseases of the stomach, intestines and kidneys). [fulspecialista.hu]

Someone with sinusitis may feel generally unwell, and can have a low grade fever (less than 38°C). [medbroadcast.com]

fever and irritability, purulent nasal discharge and cough of more than 10 days duration. [oralhealthgroup.com]

Abscess

He then tells us that he's even had a fever. He's been feeling really hot, and we ask him, "Have you had a high fever, or have you had a low fever?" [khanacademy.org]

He complained of increasing low-back pain and right lower-extremity weakness. [doi.org]

Conversely a patient with fever, IVDA, and unexplained back pain likely needs an MRI, even with a normal ESR. [aliem.com]

Hodgkin Lymphoma

An 80-year-old man was admitted to hospital with low-grade fever, weight loss, asthenia and anorexia. [ncbi.nlm.nih.gov]

fever, coughing, and fatigue, are the most common symptoms of Hodgkin’s disease. [hopkinsmedicine.org]

Hodgkin's Disease Experts Hodgkin's Disease Symptoms Swollen lymph nodes, usually in the neck, underarms, or groin, weight loss, night sweats, itchy skin, persistent low grade [hopkinsmedicine.org]

Chronic Active Hepatitis B

Symptoms of an acute infection may include loss of appetite, joint and muscle pain, low-grade fever, and possible stomach pain. [hepb.org]

Sometimes affected people also have a low-grade fever and some discomfort in the upper abdomen. Jaundice is rare. [merckmanuals.com]

Acute infection may cause nonspecific symptoms, such as fatigue, poor appetite, nausea, vomiting, abdominal pain, low-grade fever, jaundice, and dark urine; and clinical signs [aafp.org]

B-Cell Acute Lymphoblastic Leukemia

We present the case of a 9-year-old girl from northwestern Greece admitted to our Hospital because of malaise, low-grade fever, intermittent hip joint pain, anemia, leukopenia [ncbi.nlm.nih.gov]

[…] of red blood cells (anemia), fatigue, severe bleeding (hemorrhage), fever (pyrexia), nausea, headache, low levels of white blood cells with fever (febrile neutropenia), liver [fda.gov]

In addition to a full review of systems, it is important to focus on symptoms regarding infections such as low-grade fevers or night sweats. [cancertherapyadvisor.com]

Frontal Sinusitis

Symptoms of a cold (runny nose and low fever) often give way to pain and pressure in the sinuses, which are usually the first signs of sinusitis. [humanillnesses.com]

[…] grade fever, but in children with Frontal Sinusitis the fever is unusually high Persistent lethargy Sore throat. [epainassist.com]

Simple nasal congestion with a low-grade fever and a runny nose probably indicates a cold and may not call for medications or antibiotics. [emedicinehealth.com]

Acute Myeloid Leukemia

fever, and bleeding gums. [step1.medbullets.com]

Although white blood cell (WBC) counts are very high, neutrophils are low and fever is a common presenting sign. There may be failure to respond to antibiotics. [patient.info]

Review Topic QID: 106506 M1 Select Answer to see Preferred Response PREFERRED RESPONSE 3 (M1.ON.49) A 62-year-old female presents to your office with a sore throat, low-grade [step1.medbullets.com]