Effects of Bloodletting Acupuncture for Subacute and Chronic Non-specific Low Back Pain

Inclusion Criteria: * Specialist confirmed diagnosis of subacute or chronic non-specific low back pain for at least 6 weeks prior to inclusion * Average pain intensity with at least 50 mm on the VAS from 0 to 100 mm Exclusion criteria: * Serious illnesses * Poor general condition * Coagulation disorder, therapy with anticoagulants * Thrombophlebitis, skin inflammation in the area of the lower extremities * Alcohol, drug or medication addiction * Pregnancy * Lack of willingness to cooperate, linguistically or mentally unable to understand the contents of the study * Participation in another clinical trial during the study period * Starting a new therapy for the treatment of low back pain in the last 2 weeks