Predicting Response to Subacromial Injections and Lidocaine/Tetracaine Patch from Pretreatment Pain Quality in Patients with Shoulder Impingement Syndrome

The findings are consistent with the combined ideas that (1) those who have the most to gain (i.e., those reporting the highest levels of various pain qualities) can expect the best response to effective treatments and (2) different pain qualities may be associated with different types of outcomes. The findings support further research to examine how pain quality measures may be used to improve patient-treatment matching, and therefore, ultimately improve the efficiency, efficacy, and overall benefit-risk of pain treatment.