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Streptococcal pharyngitis, also known as streptococcal sore throat (strep throat), is pharyngitis (an infection of the pharynx, the back of the throat) caused by Streptococcus pyogenes, a gram-positive, group A streptococcus. [9] [10] Common symptoms include fever, sore throat, red tonsils, and enlarged lymph nodes in the front
Strep throat is usually passed on via respiratory droplets that infected people spread when they talk, cough or sneeze, the CDC says. People can get infected if they breathe in respiratory ...
Pharyngitis is a type of upper respiratory tract infection. [7] Most cases are caused by a viral infection. [2] Strep throat, a bacterial infection, is the cause in about 25% of children and 10% of adults. [2] Uncommon causes include other bacteria such as gonococcus, fungi, irritants such as smoke, allergies, and gastroesophageal reflux disease.
[1] [5] [6] When caused by the bacterium group A streptococcus, it is classed as streptococcal tonsillitis [11] also referred to as strep throat. [12] Rarely bacteria such as Neisseria gonorrhoeae, Corynebacterium diphtheriae, or Haemophilus influenzae may be the cause. [5] Typically the infection is spread between people through the air. [6]
An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose, sinuses, pharynx, larynx or trachea. [3] [4] This commonly includes nasal obstruction, sore throat, tonsillitis, pharyngitis, laryngitis, sinusitis, otitis media, and the common cold.
A 2015 study of young adult students presenting to a single clinic in Alabama had F. necrophorum as the predominant causative organism for pharyngitis 21% of the time (and found in 9% of asymptomatic students). [11] In the same study, Group A Streptococcus was found in 10% of pharyngitis patients (1% of asymptomatic students).
Lemierre's syndrome begins with an infection of the head and neck region, with most primary sources of infection in the palatine tonsils and peritonsillar tissue. [10] Usually this infection is a pharyngitis (which occurred in 87.1% of patients as reported by a literature review [6]), and can be preceded by infectious mononucleosis as reported ...
Sydenham's chorea is an autoimmune disease that results from childhood infection with Group A beta-haemolytic Streptococcus. It is reported to occur in 20–30% of people with acute rheumatic fever and is one of the major criteria for it, although it sometimes occurs in isolation.