Strep throat
Streptococcal pharyngitis
Strep throat is a bacterial infection (group A Streptococcus) that causes a sudden, painful sore throat, fever, and swollen neck glands, usually without a cough. It is confirmed with a rapid strep test or throat culture and treated with antibiotics. Most sore throats are viral and get better on their own, so the question that matters is whether yours is strep.
Get help now
Go to urgent or emergency care, do not wait, if a sore throat comes with:
- trouble breathing
- drooling, or you cannot swallow your own saliva
- severe one-sided throat swelling, or a muffled hot-potato voice
- neck stiffness
- signs of dehydration, like barely urinating
These suggest an airway problem or a deep-neck infection such as a peritonsillar abscess, not ordinary strep. That needs hands-on care, not watchful waiting.
What to do right now
- For pain and fever: acetaminophen or ibuprofen, warm salt-water gargles, throat lozenges, fluids, and rest. These help any sore throat, strep or viral.
- If the strep pattern fits (sudden sore throat, fever, no cough, tender neck glands, white patches on the tonsils), get a rapid strep test today. Any urgent care, pharmacy clinic, or campus health center can do one in minutes.
- Do not start leftover antibiotics. If the test is negative, antibiotics do nothing for you and only add side effects.
- While you have symptoms, avoid sharing cups and utensils and wash hands often; strep spreads through respiratory droplets.
Symptoms
- Sore throat that starts suddenly
- Pain when swallowing
- Fever
- Red, swollen tonsils, sometimes with white patches or streaks of pus
- Tiny red spots on the roof of the mouth (petechiae)
- Swollen, tender lymph nodes in the front of the neck
- Headache, stomach pain, nausea, or vomiting (more common in children)
- A sandpaper-like rash (scarlet fever)
Cough, runny nose, hoarseness, and pink eye are NOT typical of strep. Their presence points toward a virus.
Strep or virus?
You can get a strong hint from four features. Strep moves up the list when the sore throat starts suddenly, comes with fever, hurts to swallow, and you have tender swollen glands in the front of your neck, especially with no cough. A virus is more likely when there is a cough, runny nose, hoarseness, or red eyes. Clinicians weight these same features (the Centor criteria) before deciding whether to test. But symptoms alone cannot settle it: plenty of viral sore throats look dramatic, and some strep cases are mild. When the picture fits strep, a rapid antigen test gives an answer in minutes, with a throat culture as backup when the rapid test is negative but suspicion stays high.
How a clinician checks it
When you describe a sore throat, a clinician is silently running a differential: is this group A strep, a viral pharyngitis, mono, or something rarer and more dangerous, like a peritonsillar abscess or epiglottitis? A rapid antigen test confirms strep in minutes, with a throat culture as backup. Dangerous lookalikes get ruled out on exam: one-sided swelling with a muffled hot-potato voice, drooling, or trouble breathing changes the whole plan.
Treatment
- Antibiotics for confirmed strep: penicillin or amoxicillin for 10 days are first-line; alternatives like cephalexin or azithromycin exist for penicillin allergy. Antibiotics shorten the illness by about a day, cut contagiousness within 12 to 24 hours, and prevent rheumatic fever, a complication that can damage heart valves.
- Symptom relief for any sore throat: acetaminophen or ibuprofen for pain and fever, warm salt-water gargles, throat lozenges, fluids, and rest.
- Viral sore throats need no antibiotics; they clear on their own in about a week.
Can campus health or telehealth help?
A sore throat is one of the most common campus health visits, and the flow is quick: a rapid strep test, a look at your tonsils, and antibiotics if it is positive. Telehealth can weigh your symptoms and tell you how strongly the pattern points to strep, but the test itself is a throat swab, so confirming strep still needs an in-person stop at a pharmacy clinic, urgent care, or the health center. That is usually a 15-minute visit. After-hours: what campus health covers and what to do when it is closed.
How long it lasts
The symptoms of strep throat often improve within 3 to 7 days even without antibiotics. That is exactly why people skip the test, and it is a gamble: untreated strep can trigger rheumatic fever and post-strep kidney inflammation (antibiotics prevent these even if started up to 9 days after symptoms begin), and without antibiotics you stay contagious for 2 to 3 weeks instead of about a day. With antibiotics, you are generally no longer contagious after 12 to 24 hours of treatment and once the fever is gone, which is the rule schools and workplaces use for returning.
Prevention
- Strep spreads through respiratory droplets: coughing, sneezing, sharing utensils or drinks.
- While anyone at home is symptomatic, avoid sharing cups and utensils and wash hands often.
- You do not need to throw out a toothbrush, and there is no need to deep-clean the house.
Common questions
What are the symptoms of strep throat?
How do I know if my sore throat is strep or a virus?
Do I need antibiotics for strep throat?
When should I see a doctor for a sore throat?
Can strep throat go away on its own?
How long is strep throat contagious?
A sore throat that might be strep?
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