There are multiple definitions:

1. transcutaneous nerve stimulation(English)

   • Nervous activity - (para)sympathetic, Electrophysiology

2. tension neck syndrome(English)

   • Pain, Stress (test)

3. tounongsan(English)

   • a decoction
   • AGE, AGE-RAGE, RAGE, TCM, TNF, TNS
   • Alternative medicine, Liver disease, Infection
   • https://doi.org…cm.20231110.006