Sore throat: Is it strep throat?

There’s a tickle or sting in the throat that might just be a passing irritation, or it could be the start of something more. When swallowing starts to feel uncomfortable, it’s natural to wonder: Could that sore throat actually be strep throat?

While a sore throat can be a common symptom of many mild illnesses, strep throat is a specific bacterial infection that needs medical treatment. Understanding the difference can help someone get the right care and avoid potential complications. From symptoms to testing and treatment, here are some things to know.

In this article:

What is a sore throat?

A sore throat, also known as pharyngitis, might be a sign of another problem. When someone has a sore throat, it means that the tissue that lines their throat has become irritated. A sore throat might show up as a symptom in people with a cold or the flu, or it may be from a bacterial infection, like strep throat. A sore throat may also be a symptom of allergies or other environmental factors.

A sore throat may feel dry and scratchy, or swallowing may be painful. Symptoms that may suggest a virus is the cause of a sore throat can include a cough or runny nose.

While many sore throats can clear up on their own within a week, some people might want support to help ease their symptoms. Symptom relief options may include drinking warm beverages, gargling salt water or using a humidifier at home.

What is strep throat?

Strep throat is a bacterial infection. Symptoms may include a sore throat and pain when swallowing. Some people might notice little white spots around their tonsils. Headaches and nausea or vomiting may also develop, but these symptoms are less common.

Strep throat is more common during the school year, with peaks in winter and early spring. It is most common among school-aged children, especially those between 5 and 15 years old. It can spread easily through close contact with someone who is infected. It’s less typical in children under 3 years. 

In the United States, strep throat is estimated to cause more than 5 million doctor visits each year for people younger than 65 years old. It is estimated these visits may result in 2.8 million antibiotic prescriptions annually.

How does someone get strep throat?

The bacteria that cause strep throat are very contagious. They spread most easily in shared spaces such as daycare centers and schools. These bacteria travel through tiny droplets that are released when someone coughs or sneezes. If someone touches a surface containing those droplets and then touches their mouth or nose, the bacteria can find their way into the person’s respiratory system.

It’s also possible to pick up strep throat through more direct contact. Sharing things like drinks or utensils with someone who has strep throat can increase the chances of catching it. Because the bacteria can spread through saliva, close contact like talking or even shaking hands could also raise the risk of infection.

What can cause a sore throat?

Not every sore throat needs treatment, but understanding what’s behind one can help guide possible next steps. These may include checking in with a health care provider, drinking fluids or resting.

Sore throats have a wide range of possible causes. Some possible reasons for a sore throat may include:

• Allergies
• Cold or flu viruses
• Smoking or exposure to secondhand smoke
• Strep throat

Strep throat is caused by group A Streptococcus (group A strep) bacteria, also known as Streptococcus pyogenes. These are the same bacteria responsible for scarlet fever, an illness that can develop in some people who have strep throat.

How to know if it’s strep throat

It’s not always easy to tell the difference between a sore throat and strep throat. That’s because group A strep bacteria can cause a range of symptoms.

In young children, strep throat might not appear as a sore throat. It could look more like poor appetite or general fussiness. In older kids and adults, strep throat typically comes paired with red, swollen tonsils and pain when swallowing. Things like a cough or runny nose don’t typically show up with strep throat, since those symptoms may suggest the sore throat is caused by a virus. The only way to know for sure is by visiting a health care provider.  

Signs and symptoms of strep throat

One of the most common symptoms of strep throat is a sore throat. It may come on quickly, and swallowing might suddenly feel painful. Red spots may appear on the roof of the mouth, and white patches or streaks of pus might appear on the tonsils. Other symptoms, such as fever or swollen lymph nodes, can also show up.

When to visit a health care provider

Knowing when to seek treatment for strep throat can be especially important for children and teens, who are more likely to be infected. Complications can occur if the bacteria that cause strep throat spread to other parts of the body. They may include:

• Abscesses (pockets of pus) around the tonsils or in the neck
• Ear infections
• Kidney disease known as post-streptococcal glomerulonephritis
• Rheumatic fever (a disease that can affect the brain, heart, joints and skin)
• Sinus infections

How is strep throat diagnosed?

When someone has a rash or sore throat, a health care provider might check to see if strep throat or scarlet fever is the cause. To do this they may ask a few questions, do a quick exam, or perform either a rapid strep test or throat culture.

Rapid strep test

If a health care provider thinks an infection may be strep throat or scarlet fever, they may start with a rapid strep test. During this test, the provider will use a special swab to gently collect a sample from the person’s throat and tonsils. This checks for group A Streptococcus bacteria. 

Results are usually available quickly. If the rapid test comes back positive, it means group A Streptococcus is likely behind the sore throat or rash symptoms. If it's negative, the provider might still order a throat culture to be sure.

Throat culture

A throat culture is similar to a rapid test, but in this case the sample is sent to a lab. This process takes a little longer, but it can help confirm a strep throat infection that a rapid test might miss. Throat cultures are especially important for children and teens, since untreated strep infections can sometimes lead to complications like rheumatic fever.

Helping to manage a sore throat and strep throat

Someone’s test results can help determine what happens next.

If the test is positive for strep throat, the next step usually involves a prescription for antibiotics to help clear the infection and lower the risk of complications or spreading it to others. There are also sore throat self-care tips that might help someone feel better while the antibiotic does its work.

If the test comes back negative for strep throat, the sore throat might be due to a virus. In that case, antibiotics will not help. Symptom management might be focused on symptom relief and home care.

Does strep throat go away on its own?

Unlike a viral sore throat, strep throat won’t go away on its own. Letting it linger without treatment can lead to more serious issues down the line.

In some cases, a person may become a carrier. That means they carry the bacteria but don’t experience symptoms and don’t usually need antibiotics. They’re also unlikely to experience complications or spread the infection. But if they do get a sore throat, a strep throat test may come back positive. In that instance, it can be difficult to figure out what’s actually causing their sore throat.

Medication support

If a patient tests positive for group A strep bacteria — either through a rapid strep test or a throat culture — a health care provider will likely prescribe antibiotics. These medications can help lower the chance of complications and the risk of spreading the infection to others. It can also help shorten the duration of symptoms.

If the test is negative for group A strep, antibiotics won’t help. Most sore throats resolve on their own within a week. If it doesn’t go away, or if other symptoms start to develop, it’s a good idea to get checked out by a health care provider.

Key takeaways

Understanding strep throat is important for helping to get the right care. Some sore throats are caused by viruses or environmental factors and tend to resolve on their own, but strep throat is different. It’s a bacterial infection caused by group A Streptococcus, and standard treatment calls for antibiotics. The infection may share symptoms with other viruses that can cause similar symptoms, so a diagnostic test — like a rapid strep test or a throat culture — can help people figure out what’s causing their symptoms.

If the test is positive, a health care provider may prescribe antibiotics to treat the infection. This can help relieve symptoms while also helping reduce the risk of spreading the bacteria to others and helping to prevent potential complications. If someone is experiencing sore throat symptoms or is unsure about what’s causing them, a health care provider can help evaluate their symptoms and recommend appropriate care.  

It was last reviewed by a CVS clinician on August 12, 2026.