Over the course of the study, participants within this group will receive 12 sessions of Low-Level Laser Therapy (LLLT) treatment over a duration of 4 weeks using the Richmar TheraTouch LX2 device. Treatment location will be determined through assessment of each qualifying participant. Treatment sessions will be limited to a single area of the body associated with the qualifying participant's primary pain complaint.

The TheraTouch LX2 device includes a 9-diode cluster probe which emits a combination of LED and laser light. The cluster probe includes four 650 nm LED diodes capable of delivering a total of 40 mW and five 850 nm laser diodes capable of delivering a total of 1000 mW of power. LLLT will the applied with the cluster probe directly in contact with the subject's skin. LLLT dosages will vary according to the location of the subject's pain and may require multiple applications during a session. Each individual application will typically range from 4-16 Joules.

The NPRS is an eleven point scale (0-10) where the subject is asked to provide a rating of their pain current, best and worst pain intensity over the past 24 hours. Subjects are asked to rate their pain on a scale of 0 to 10 with 0 being "No Pain" and 10 being "Worst Pain Imaginable". Data will be collected at baseline during Visit 1.

The NPRS is an eleven point scale (0-10) where the subject is asked to provide a rating of their pain current, best and worst pain intensity over the past 24 hours. Subjects are asked to rate their pain on a scale of 0 to 10 with 0 being "No Pain" and 10 being "Worst Pain Imaginable". Data will be collected post-treatment during Visit 12.

The PSFS is a device used to quantify the extent of a subject's perceived functional limitations due to a particular problem or condition. The subject is asked to identify up to three activities in which they feel their performance is limited. For each of the activities identified, the subject will rate their perceived level of limitation using an eleven point scale (0-10) with 0 being "Unable to perform activity" and 10 being "Able to perform activity at the same level as before injury or problem". Data will be collected at baseline during Visit 1.

The PSFS is a device used to quantify the extent of a subject's perceived functional limitations due to a particular problem or condition. The subject is asked to identify up to three activities in which they feel their performance is limited. For each of the activities identified, the subject will rate their perceived level of limitation using an eleven point scale (0-10) with 0 being "Unable to perform activity" and 10 being "Able to perform activity at the same level as before injury or problem". Data will be collected post-treatment during Visit 12.