As for tonsillitis, this can be caused by a bacterial infection, leading to an infection commonly known as strep throat, Dr Jarvis said. Group A Streptococcus is often the culprit for this too.

Sore throat? Might be tonsillitis. Here's what to look for. By Dr. Richard D. Kang, M.D. / Boys Town Ear, Nose & Throat Institute Feb 25, 2015 Feb 25, 2015 0 ...

Tonsillitis refers to the inflammation of the tonsils, which is classified into acute (can last up to 2 weeks), recurrent (several times a year), and chronic (for an extended period).