Safety and Efficacy of Low-intensity Laser Therapy in the Treatment of Chronic Musculoskeletal Pain

Inclusion Criteria: 1. Age ≥ 18 years old; 2. Chronic musculoskeletal pain (including cervical spondylosis, periarthritis of shoulder, osteoarthritis, back muscle Fasciitis, lumbar disc herniation) was diagnosed, and the pain lasted for more than 3 months; 3. The degree of pain before treatment was mild to moderate (NRS score\<7 points); 4. Can cooperate in completing consultation and scale evaluation; 5. Sign an informed consent form. Exclusion Criteria: 1. Previous spinal surgery or severe spinal diseases (such as fractures, tumors, inflammation, and infectious diseases); 2. Suffering from serious systemic diseases, including liver and kidney dysfunction, cardio cerebral, vascular disease, decompensated metabolic syndrome; 3. Serious skin diseases (skin cancer, erysipelas, severe eczema, severe dermatitis, severe psoriasis, lupus, Hives); 4. Suffering from mental disorders, intellectual disabilities, epilepsy and other diseases; 5. Moderate to severe depressive state; 6. Have a history of drug abuse, drug abuse, and alcohol abuse; 7. Individuals with contraindications to NSAIDs or laser therapy; 8. Pregnant women; 9. Recently participated in other clinical studies.