Low-Grade Fever: Symptoms & Causes In Infants, Children, Adults

Going through a persistent low-grade fever and thinking what to do? Well, there are many ways to treat this. As the cause of a persistent fever is an underlying disease, you might want to look for the disease first. Underlying the disease and treating it will not only cure your low-grade fever but will also make your body healthy and back to normal. Let’s get started! 

What is a low-grade fever?

One is said to be going through fever when their body’s temperature is higher than normal. The normal temperature of the body should lie roughly at 98.6-degree Fahrenheit or 37 degrees Celsius. 

By low-grade fever, we mean a slightly higher temperature, between 98.7-degree Fahrenheit (37.5 Celsius) and 100.4-degree Fahrenheit (38.3 Celsius). This type of fever lasts for more than a day. 

Persistent or chronic fever is the name given to the fever that lasts for more than 10 to 14 days. 

Having a fever can indicate more than just one thing. Whereas a mild low-grade fever might be nothing one has to worry about. In most cases, when the body’s temperature increases, it is considered to be the normal response from the body’s immune system to an infection. Such as a cold or the flu. 

But there are cases too in which having a persistent low-grade fever is more than just an infection.  There are many rare causes of this type of fever that has to be diagnosed by the doctor. 

When to make an appointment with the doctor? 

Low-Grade Fever

Well having just a fever might not be the reason one should appoint a doctor. However, few cases also need special attention or advice. The special case to go see the doctor is when someone’s fever lasts for more than just a few days. The presence of a low-grade fever can tell a lot of different things about the health condition for an adult, children, as well for infants. 

Low-grade fever symptoms 

Below are given the symptoms that people of the different age group go through while having a low-grade fever: 

1. Infants 

For infants who are under 3 months old, going through= even a slightly higher temperature might indicate the invasion of a serious infection. In such a case, call your pediatrician if your baby is going through a persistent low-grade fever. 

The fever will also be accompanied by behaviors such as a baby being lethargic, irritable, uncomfortable, or going through conditions d such as a cold, cough, diarrhea. 

Even if the other symptom is absent in your baby’s case but if the fever lasts for more than three days, you should see a doctor. 

2. Children 

If your child is having a low-grade fever yet he or she is playing, making eye contact with you, and consuming fluids, there is nothing to be worried about. 

However, you can visit the doctor if the low-grade fever lasts for more than three days. You can also consult with your child’s doctor if you see the following symptoms in your child: 

  • Your child is vomiting whatever he is consuming
  • Not able to make direct eye contact with you
  • Your child is going through diarrhea
  • Your child appears to be very uncomfortable and irrupted
  • Your child gets a fever even after being in a hot car
3. Adults 

In the case of adults, a low-grade fever is not even a concern unless and until it crosses the 103-degree Fahrenheit or 39,4-degree Celsius mark. This temperature will indicate an emergency meeting with the doctor. 

If someone is going through a fever lower than 103-degree Fahrenheit that is lasting more than just 3 days, this is a sign to visit your doctor. 

Below are given the signs and symptoms that if you suffer from any of these, should make an immediate medical visit: 

  1. muscle weakness
  2. difficulty breathing
  3. hallucinations
  4. strange rash that rapidly worsens
  5. confusion
  6. persistent vomiting
  7. severe headache
  8. throat swelling
  9. seizures
  10. pain when urinating
  11. stiff neck

Low-grade fever causes 

The most common cause to have a persistent low-grade fever is suffering through a viral infection such as a common cold. Below are given some other eligible causes: 

  1. UTIs

Urinary tract infection is caused to the organs involved for the production till the excretion of the urine. When the bacteria of the urine remain in the tract, they can cause infection, which might even reach one’s kidney. 

The symptoms include frequent urination, burning sensation while urinating, and dark urine. 

The diagnosis is done through a sample of urine followed by an examination with the doctor. 

  1. Respiratory infection 

When microorganisms invade our body, our immune system raises the body’s temperature to fight germs and bacteria. When someone suffers from the common cold, they also go through a low-grade fever that lasts more than just a few days. 

The symptoms of having a cold are: 

Adults mainly suffer from bronchitis or viral pneumonia. Apart from getting a low-grade fever, people also have a sore through with the presence of cough. 

In children, back-to-back viral infection is common. This type of infection makes the fever stay for a longer duration. 

  1. Teething 

When the infants reach the age of 4 to 7 months, they begin to teeth. This makes them irritable, cry-like and having a low-grade fever. 

Make a note if the fever crosses the 101-degree Fahrenheit mark, this might not be the fault of teething. You should definitely visit your pediatrician. 

  1. Medication 

When you start a new meditation, your body takes time to get acquainted with it. This might result in you having a temporary fever. This is called drug fever. 

So, if you think this might be the fault of your new medication, ask your doctor to prescribe you alternatives. 

  1. Tuberculosis 

TB is a highly dangerous disease that is curable when detected early. This disease is caused by bacteria that become active due to a lack of immunity

One of the main symptoms of TB is having night sweats due to getting a fever every night. Treating TB will ultimately cure the low-grade fever in a few days. 

Read: 7 Reasons Why Your Fever Is Not Coming Down

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