Efficacy Of Non-Invasive High Power Laser Acupuncture Stimulation In Chronic Non-Specific Low Back Pain

Inclusion Criteria: Subjects will be included in this study will be having all of the following criteria: 1. Age over 18 years of age. 2. Both genders (males and females). 3. Normal BMI ranges between 18.5:24.9 kg/m2. 4. Patients will be referred from an orthopedist with diagnosis of chronic low back pain without underlying pathological causes. The patients with chronic nonspecific low back pain more than 3months. Minimum pain intensity of 30 mm on the visual analogue scale (VAS) for pain, which ranges from 0 to 100 mm. 6\) CNSLBP patients will be diagnosed based on the standard criteria, including pain and tenderness on lower back and a negative result for all special tests for lumber neurological examination. Exclusion Criteria: 1. History of any surgical procedure in the back or the lower extremities. 2. Back pain secondary to known specific pathology (e.g. infection, tumor, osteoporosis, fracture, structural deformity, inflammatory disorder (e.g. ankylosing spondylitis) or cauda equine syndrome). 3. Patient with lumbar instability including spondylolisthesis. 4. Red flags (e.g. fever, unexplained weight loss, progressive weakness, radiation to lower limb, bowel and bladder dysfunction). 5. Pregnancy.