Strep throat is a bacterial infection that is a common cause of sore throat.
Antibiotics are used to treat strep throat.
- Penicillin or amoxicillin are first-line choices
- Other antibiotics may be used for people allergic to penicillin
- If antibiotics are prescribed, take the entire dose as prescribed even if you feel better before you have finished all the medication
Strep throat usually goes away on its own within a week with or without antibiotic treatment, but without antibiotics, people may still be contagious for two to three weeks and are at a higher risk for complications.
If a person tests positive for strep throat but has no symptoms (is a “carrier”) treatment is often not needed.
What Are Symptoms of Strep Throat?
Symptoms of strep throat often come on quickly and may include:
- Sore throat
- Pain when swallowing
- Swollen tonsils
- Swollen uvula
- Red throat
- White patches or streaks of pus on the tonsils, back of the throat, and tongue
- Tiny, red spots on the roof of the mouth
- Whitish, furry film on the tongue
- Swollen lymph nodes in the front of the neck
- Fever
- Headache
- Stomach pain
- Nausea
- Vomiting
- Rash (scarlet fever)
What Causes Strep Throat?
Strep throat is caused by bacteria called group A Streptococcus (group A strep) which live in the nose and throat and can be contagious. When a person infected with strep coughs or sneezes, they release respiratory droplets with the bacteria into the air.
Strep can be transmitted when people:
- Inhale the respiratory droplets
- Touch something with droplets on it and then touch their mouth or nose
- Share glasses, plates, or utensils with an infected person
- Touch sores on the skin caused by group A strep (impetigo)
- Eat improperly handled food (rare)
From 
https://www.cdc.gov/groupastrep/diseases-public/strep-throat.html
https://www.gohealthuc.com/library/strep-throat-home-remedies