According to the data you provided (repetitive throat infections, sinus infection, sore red throat, overactive lymph node on one side of the throat), it is possible that you might be experiencing a chronic throat infection. This chronic inflammation is caused by bacteria or a virus, originating from another organ close to the throat. The sinuses might be a good source of bacteria or viruses for the chronic throat infection. The sinuses might cause post nasal drip which easily spreads the infection to the throat. The overactive lymph node might be an indicator of a present throat inflammation.

Since you did not mention that the lymph node became normal, it might be assumed that the inflammation never subsided completely.


You might want to visit your family doctor at any time convenient, but none is considered to be too soon, because you have already experienced the inflammation for a longer period. Your doctor might recommend throat and, perhaps nose swabs in order to determine the exact bacteria that causes the infection and the antibiotic needed for its complete treatment. Nasal drops containing antibiotics might be recommended to try to treat the inflammation in the sinuses. Treating the sinuses completely is imperative. Otherwise the infection might again spread to the throat.