I have Barrett's esophagus and chronic Epstein Barr Virus.
6 months ago one of the neck lymph nodes had swollen up (became the size of a pea), no pain though.
Started taking Groprinosin. The swelling decreases during the Groprinosin course, but does not go away completely.
Blood analysis was fine when the swelling has begun.
What could be the reason behind this? Is it ok that only one lymph node on the neck swells up? Other lymph nodes (armpits, pelvis) are fine.