There are 2 main types of sore throat:
1. A respiratory tract infection, the most common cause of sore throat, is commonly caused by both virus that causes colds, influenza, which often appear as sore throat, especially when swallowing, with slightly red throat without any white spots at tonsillectomy with clear non green-yellow mucus, mostly starts with a cold before becoming a sore throat. The bacteria that cause tonsillitis, Sinusitis Infection and throat inflammation often occurs in those patients with a continuous sore throat for many days with red throat, white spots at the tonsils, fever, green-yellow mucus, difficulty swallowing, change of voice upon speaking.
2. Inflammation that is not caused by an infection, such as gastroesophageal reflux disease in the throat and larynx, vocal over-usage, allergic rhinitis, exposure to irritating substances such as smoke, dust, dry air, chemicals, or certain dietary behaviors such as drinking alcohol, eating spicy food. Therefore, the prevention and treatment will vary according to the cause of the sore throat.
Source … http: //www.rcot.org/2016/People/Detail/182
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available at most pharmacies.