The goal of this clinical trial is to determine whether far-infrared therapy and transcutaneous electrical nerve stimulation (TENS) can improve postoperative side effects in patients with head and neck cancer. The main questions this study aims to answer are:

Can far-infrared therapy and transcutaneous electrical nerve stimulation reduce pain and improve neck range of motion?

Can far-infrared therapy and transcutaneous electrical nerve stimulation reduce inflammation?

Researchers will compare three groups:

Group A: control group; Group B: transcutaneous electrical nerve stimulation; Group C: far-infrared therapy combined with transcutaneous electrical nerve stimulation, to evaluate differences in pain, neck range of motion, and inflammation.

Participants will receive the assigned intervention in the morning and evening for five consecutive days. Outcome measurements will be conducted on the first and fifth days.

Inclusion Criteria

1. Patients aged 30 to 85 years with a confirmed diagnosis of head and neck cancer.
2. Patients scheduled to undergo surgical resection.
3. Patients who are conscious, able to communicate verbally or in writing, and willing to complete questionnaires and comply with all study procedures.

Exclusion Criteria:

1. Presence of open wounds or skin lesions at the sites where transcutaneous acupoint electrical stimulation electrodes would be applied.
2. Contraindications to transcutaneous acupoint electrical stimulation, including a history of epilepsy, brain tumors, arteriovenous malformations, or implanted cardiac pacemakers or defibrillators, to avoid potential adverse effects of electrical stimulation.