Lymphadenitis means that your body has external evils such as wind, dampness and heat, and lymph, as the immune system, is the first to bravely meet the enemy. The symptom at this time is lymphadenitis on your neck. This shows that your own immunity is still good. If you take anti-inflammatory injections to eliminate inflammation, your own immune cells will also be destroyed, which is why it will become inflamed after a while.
I suggest you take vitamin C tablets every day. You can increase the dose when it is inflamed. Just take one tablet every day. Stick to it, and there will be no lymphadenitis.