Strep Throat: Symptoms, Rapid Test & Treatment | Westmont, IL

Strep throat tends to come on suddenly. One of the most useful clues for distinguishing it from a common cold is what is present versus what is absent. Classic strep throat features:

• Sudden, severe sore throat that often makes swallowing painful
• Fever, sometimes 101°F or higher
• Red, swollen tonsils, occasionally with white patches or streaks of pus
• Tiny red spots (petechiae) on the roof of the mouth
• Swollen, tender lymph nodes in the front of the neck
• Headache, body aches, or nausea and stomachache, particularly in children

Just as telling is what strep throat usually does not include. According to the CDC, patients with strep throat typically do not have a cough, runny nose, hoarseness, mouth ulcers, or pink eye. When those cold-like symptoms dominate, a virus is the more likely cause. If you are trying to sort out the difference at home, our guide on when to seek walk-in care can help, but the only way to know for certain is a test.

Some Cases Come With a Rash

When strep is accompanied by a fine, sandpapery, red rash, the condition is called scarlet fever. Scarlet fever sounds alarming but is caused by the same group A strep bacteria and is treated the same way — with antibiotics. It is not more dangerous than strep throat as long as it is properly treated.

You cannot reliably diagnose strep throat by looking at the throat alone, because viral sore throats can look very similar. That is why testing is the standard of care. At our Westmont clinics, diagnosis usually involves a quick, painless swab of the back of the throat and tonsils.

• Rapid strep test (rapid antigen detection test): A swab is analyzed on-site, and results are typically ready in a matter of minutes. A positive result is highly reliable and means treatment can begin right away.
• Throat culture: Because a rapid test can occasionally miss an infection, a negative rapid test — especially in children and teens — may be confirmed with a throat culture, which is grown in a lab and takes a day or two. This helps make sure a true strep infection is not overlooked.

Having on-site lab testing under one roof means most patients leave knowing whether they have strep and, when needed, with a treatment plan already in hand. There is no separate trip to a lab and no multi-day wait for a basic answer.

When a strep test is positive, the treatment is a course of antibiotics. Penicillin and amoxicillin are the first-choice antibiotics for group A strep; for people with a penicillin allergy, alternatives are available. It is important to take the full course exactly as prescribed, even after you start feeling better within a day or two, because stopping early can allow the infection to linger or return.

Antibiotics do several important things for strep throat:

• Shorten how long you feel sick and ease symptoms sooner
• Reduce how long you are contagious — most people are no longer contagious after about 24 hours on appropriate antibiotics
• Lower the risk of complications, including rheumatic fever, a rare but serious condition that can affect the heart, as well as kidney inflammation and abscesses around the tonsils

Alongside antibiotics, supportive care helps you feel more comfortable: rest, plenty of fluids, warm or cold soothing foods, throat lozenges for older children and adults, and over-the-counter acetaminophen or ibuprofen for pain and fever when appropriate. Because strep throat is bacterial, home remedies alone will not cure it — the antibiotic is what clears the infection.

It can be tempting to ask for antibiotics for any bad sore throat, but that approach causes problems. Most sore throats are viral, and antibiotics do nothing for viruses. Taking antibiotics you do not need contributes to antibiotic resistance and can cause side effects like stomach upset or allergic reactions. Testing first ensures antibiotics go to the people who will actually benefit — those with a confirmed strep infection. This is exactly why our providers test rather than guess.

Consider a walk-in visit for evaluation and a rapid strep test if you or your child has:

• A sore throat that comes on suddenly and is severe, especially without cough or runny nose
• A sore throat with a fever, swollen neck glands, or white patches on the tonsils
• A sore throat that lasts longer than a couple of days or keeps getting worse
• Known exposure to someone recently diagnosed with strep

Call 911 or go to the nearest emergency room if there is difficulty breathing, difficulty swallowing to the point of drooling or being unable to swallow saliva, a stiff neck that will not bend, muffled “hot potato” voice, severe swelling, or signs of a serious allergic reaction. These can signal a medical emergency that needs immediate care, not a walk-in visit.

If you suspect strep throat, you do not need an appointment. Walk in to either of our two Westmont locations for a rapid strep test and, when appropriate, same-day treatment. We are open Monday through Friday, 9 AM to 6 PM, and Saturday and Sunday, 9 AM to 5 PM. You can check in online to save time, or call us at (630) 324-6825 with questions. For a broader look at what we treat, visit our pediatric urgent care and general urgent care pages.

To learn more from trusted national sources, see the CDC’s overview of About Strep Throat and Mayo Clinic’s guide to strep throat symptoms and causes.

This page is for general educational purposes and is not a substitute for professional medical advice. If you are experiencing a medical emergency, call 911.