Strep Throat

Strep throat is a bacterial infection of the throat and tonsils caused by Streptococcus pyogenes, also known as group A streptococcus. It is highly contagious and spreads through respiratory droplets from coughing or sneezing, or by touching contaminated surfaces. Strep throat is more common in children and adolescents but can affect people of all ages. Prompt diagnosis and treatment are important to prevent complications such as rheumatic fever or kidney inflammation.

Symptoms

Symptoms usually appear suddenly and may include:

• Sore throat with pain when swallowing

• Red and swollen tonsils, sometimes with white patches or streaks of pus

• Fever and chills

• Swollen lymph nodes in the neck

• Headache or body aches

• Nausea or vomiting, especially in children

• Fatigue or general discomfort
  Unlike viral sore throats, strep throat rarely causes coughing or a runny nose.

Causes

Strep throat is caused by infection with the Streptococcus pyogenes bacteria. It spreads through:

• Respiratory droplets from an infected person

• Direct contact with an infected person

• Touching surfaces or objects contaminated with the bacteria and then touching the mouth or nose
  The bacteria attach to the throat lining and multiply, causing inflammation and symptoms.

Risk Factors

Factors that increase the risk of strep throat include:

• Age between 5 and 15 years

• Close contact with someone infected

• Weakened immune system

• Seasonal factors, especially late winter and early spring

• Crowded environments such as schools or daycare centers
  Not everyone exposed to the bacteria develops strep throat, but these factors increase susceptibility.

Complications

If left untreated, strep throat can lead to serious complications, such as:

• Rheumatic fever, which can affect the heart, joints, and nervous system

• Post-streptococcal glomerulonephritis, causing kidney inflammation

• Ear infections or sinus infections

• Abscess formation around the tonsils (peritonsillar abscess)

• Spread of infection to other parts of the body
  Timely treatment with antibiotics greatly reduces these risks.

Prevention

Preventive measures for strep throat include:

• Washing hands regularly with soap and water

• Avoiding close contact with infected individuals

• Not sharing personal items like utensils, cups, or towels

• Covering the mouth and nose when coughing or sneezing

• Promptly seeking treatment if infection is suspected
  Good hygiene and early medical care are key to preventing transmission and complications.