5 Reasons to Go to Urgent Care for a Fever
Mar 16, 2026
A fever is your body’s natural response to a threat. To ensure immune cells work more efficiently and to help halt the growth of viruses and bacteria, your immune system releases pyrogens, chemicals that tell your brain to raise your body temperature.
In adults and children, a temperature of 100.4°F or higher is generally considered a fever. While many fevers are mild and resolve on their own, some signal an underlying condition, and others can reach 103°F or higher, requiring prompt medical attention.
If you or a loved one is battling a fever and wondering what the next step is, read on as our expert at North Tex MedCare Clinic & Urgent Care, Dr. Frank Lee, explains when fevers require immediate investigation and when they are likely to resolve on their own.
Most fevers help your immune system fight off the threat. However, if the fever is consistently above 103°F or lasts for more than three days, it could mean your body is still fighting something it can’t handle on its own. Persistent fevers can indicate pneumonia, strep throat, or a urinary tract infection.
Not all fevers are the same. Some may be signs of more serious conditions. Look for any of the following symptoms:
Any of these symptoms in combination with a fever should prompt a medical visit. For example, confusion and a high fever could be signs of sepsis, a life-threatening response to an infection. A severe headache, stiff neck, and high fever may be signs of meningitis.
Urgent care clinics can perform on-site testing, including flu tests, COVID-19 testing, strep tests, urinalysis, and other diagnostic evaluations to determine the source of infection quickly.
Fevers in young children can be especially concerning because their immune systems are not fully developed and are less efficient at localizing the source of an infection. When the infection isn’t clearly contained, illness can spread more quickly into the bloodstream.
Infants under three months old with a temperature of 100.4°F or higher require immediate medical attention. For older infants and children, evaluation is recommended if the fever is high, lasts more than a couple of days, or is accompanied by lethargy, irritability, or difficulty drinking fluids.
If you have a chronic condition such as diabetes, heart disease, asthma, or a weakened immune system, even a moderate fever can pose additional risks. For example, in someone with diabetes, fever and infection may trigger a stress response that raises blood sugar levels. In people with asthma, breathing symptoms may worsen.
Not every fever requires a trip to the emergency room, but sometimes a quick evaluation is still needed to make sure you are in the clear. Urgent care bridges the gap by providing prompt evaluations and treatment when a life-threatening emergency isn’t present.
Upon arriving at our walk-in clinics in Allen, Addison, Fort Worth, and San Antonio, Texas, you will go through an easy check-in process that uses AI to reduce paperwork and verify your insurance. AI is also used to gather information about your symptoms, so our staff is already familiar with your case before meeting you.
The entire process is designed to be fast, seamless, and comfortable for our patients. If your fever is bothering you, get peace of mind by contacting us to schedule an appointment. Our staff will evaluate your symptoms, order tests if necessary, and ensure everything is done to support a quick recovery.