Sleep problems in patients with CLBP are a very common complication and is the most neglected part of the management. Though previous literature suggested that sleep problems need to be managed in patients with CLBP, no physical therapy or manual therapy techniques has been checked for their efficacy to manage the same. Therefore, there is a need to check the efficacy of various physical therapy and manual therapy techniques so that sleep problems associated with CLBP can be managed effectively by physical means. The main purpose of the study is to check the efficacy of tDCS and CST to improve sleep, pain and quality of life in patients with CLBP.

Inclusion Criteria:

1. People with chronic low back pain (more than 3 months)
2. Both males and females.
3. 18-50 years
4. Able to follow verbal commands.

Exclusion Criteria:

1. Diagnosed with primary sleep disorders
2. Pregnancy
3. Taking any medication for a psychological disorder
4. Acute or subacute LBP
5. Diagnosed with any other systemic disorder.
6. Spinal tumour.
7. Radicular pain and nerve root compression.
8. Severe spinal stenosis, spondylolisthesis, fibromyalgia.
9. Unstable angina and other cardiovascular disorders.
10. Malignancy.
11. History of other systemic and inflammatory disease.