Sore Throat
Why Most Do Not Need Antibiotics, and Which Signs Matter
General information from an emergency physician. It adds to your discharge papers and does not replace them or your own doctor. What this site is and isn’t
Key Takeaways:
- Most sore throats come from viruses. Strep causes about 5% to 15% of adult cases. It causes 15% to 30% of cases in children.
- Even with proven strep, antibiotics shorten throat pain by only about 1 to 2 days. Their larger purpose is to prevent some problems and reduce spread.
- Trouble breathing, drooling, trouble opening the mouth, one-sided swelling, or getting better and then worse needs immediate reassessment.
About Your Symptoms & ED Evaluation
A sore throat hurts because infection makes the throat lining swell, and the body releases chemicals that make pain nerves easier to trigger. Swallowing presses and stretches that sore tissue.
Viruses often inflame more of the breathing passages. That is why cough, runny nose, red eyes, mouth sores, or diarrhea point away from strep. Strep tends to focus its inflammation in the throat.
Symptoms and an exam help decide whether testing may help. A clinical score can find people at low risk who may not need a strep test, but the score cannot prove strep or exclude a deeper infection. A rapid strep test finds most true infections, but not all. In children and teens, a negative rapid test may need a backup test.
Deep infections are uncommon, but a strep score does not test for them. Their warning signs come from breathing, swallowing, voice, neck, and one-sided throat changes.
First Steps & Evidence-Based Home Care
Follow the discharge plan. If an antibiotic was prescribed for proven strep, take it for the prescribed time. The course clears the bacteria. It does more than stop pain. Antibiotics do not help most viral sore throats, and unneeded treatment causes side effects and adds to drug resistance.
Soothe the irritated surface. Honey can coat the sore throat and may ease cough. Never give honey to a baby younger than 12 months. It can cause botulism. Lozenges and sprays may cool or briefly numb the throat; follow product labels and the discharge plan.
Colored mucus does not reliably mean an infection is bacterial. Antibiotics have not helped purulent nasal drainage from a common cold, and add side effects.
Timeline & Expected Recovery Course
Both viral and strep sore throats usually improve on their own. Untreated strep fever often ends in 3 to 5 days, and throat pain in about 1 week. A viral sore throat often ends in 5 to 7 days. Cough or a runny nose may last longer.
The course does not always stay reassuring. Symptoms that do not improve on time need another exam. A sore throat may improve and then worsen.
For confirmed strep, standard guidance is to remain away from school or work until at least 24 hours after starting antibiotics. Follow any additional instructions in the discharge plan.
Emergency: Come Back to the ER Now
Return to the emergency department immediately for:
- trouble breathing, noisy breathing, or rapidly worsening shortness of breath;
- drooling, inability or refusal to swallow, or severe pain with swallowing that seems out of proportion to the visible throat;
- inability to open the mouth normally;
- a muffled “hot potato” voice, one-sided throat swelling, or the small hanging tissue in the back of the throat pushed to one side;
- marked neck stiffness, the head held tilted to one side, or one-sided neck pain or swelling;
- a sore throat that improves and then worsens;
- persistent or worsening fever despite treatment; or
- new chest pain, trouble breathing, shaking chills, or feeling severely ill after a sore throat.
This list does not include every emergency. Return for any severe, new, or rapidly worsening symptom.
Reviewed September 3, 2026