excerpts of the thesis:

Background and Aims
a report on the effects of LLLT for chronic neck pain.

Materials and Methods
Over a 3 year period, 26 rehabilitation department outpatients with chronic neck pain, diagnosed as being caused by cervical disk hernia, underwent treatment applied to the painful area with a 1000 mW semi-conductor laser device delivering at 830 nm in continuous wave, 20.1 J/㎠/point, and three shots were given per session (1 treatment) with twice a week for 4 weeks.
 

Results:
1. A visual analogue scale (VAS) was used to determine the effects of LLLT for chronic pain and after the end of the treatment regimen a significant improvement was observed (p<0.001).

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Conclusion:
 The present study demonstrates that LLLT was an effective form of treatment for neck and back pain caused by cervical disk hernia, reinforced by postural training.