What is pharyngitis? How does pharyngitis come from?

alopah Date:2021-09-28 11:47:09 From:healthline
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What is pharyngitis?Pharyngitis is inflammation of the pharynx, which is in the back of the throat. It’s most often referred to simply as “sore throat.” Pharyngitis can also cause scratchiness in the throat and difficulty swallowing.


According to the American Osteopathic Association (AOA), pharyngitis-induced sore throat is one of the most common reasons for doctor visits. More cases of pharyngitis occur during the colder months of the year. It’s also one of the most common reasons why people stay home from work. In order to properly treat a sore throat, it’s important to identify its cause. Pharyngitis may be caused by bacterial or viral infections.


Causes of pharyngitis

There are numerous viral and bacterial agents that can cause pharyngitis. They include:


adenovirus, which is one of the causes of the common cold


croup, which is a childhood illness distinguished by a barking cough

whooping cough

group A streptococcus


Viruses are the most common cause of sore throats. Pharyngitis is most commonly caused by viral infections such as the common cold, influenza, or mononucleosis. Viral infections don’t respond to antibiotics, and treatment is only necessary to help relieve symptoms.


Less commonly, pharyngitis is caused by a bacterial infection. Bacterial infections require antibiotics. The most common bacterial infection of the throat is strep throat, which is caused by group A streptococcus. Rare causes of bacterial pharyngitis include gonorrhea, chlamydia, and corynebacterium.


What is pharyngitis


Frequent exposure to colds and flus can increase your risk for pharyngitis. This is especially true for people with jobs in healthcare, allergies, and frequent sinus infections. Exposure to secondhand smoke may also raise your risk.


What are the symptoms of pharyngitis?

The incubation period is typically two to five days. Symptoms that accompany pharyngitis vary depending on the underlying condition.

In addition to a sore, dry, or scratchy throat, a cold or flu may cause:


runny nose




body aches


fever (a low-grade fever with a cold and higher-grade fever with the flu)


In addition to a sore throat, the symptoms of mononucleosis include:

swollen lymph nodes

severe fatigue


muscle aches

general malaise

loss of appetite



Strep throat, another type of pharyngitis, can also cause:

difficulty in swallowing

red throat with white or gray patches

swollen lymph nodes



loss of appetite


unusual taste in the mouth

general malaise


The length of the contagious period will also depend on your underlying condition. If you have a viral infection, you will be contagious until your fever runs its course. If you have strep throat, you may be contagious from the onset until you’ve spent 24 hours on antibiotics.


The common cold usually lasts less than 10 days. Symptoms, including fever, may peak around three to five days. If pharyngitis is associated with a cold virus, you can expect your symptoms to last this duration of time.

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