The goal of this clinical trial is to investigate the effectiveness of Eye Movement Desensitization and Reprocessing (EMDR) therapy in reducing pain intensity in individuals with chronic painful diabetic neuropathy (PDN). The main questions it aims to answer are: 1. Does EMDR therapy significantly reduce pain intensity in individuals with chronic PDN? 2. What is the impact of EMDR therapy on secondary outcomes, specifically anxiety, sleep disturbances, and personalized pain-related limitations? Additionally, the study will explore the correlation between pain scores and symptoms of post-traumatic stress disorder (PTSD) in individuals with chronic PDN. Participants will undergo EMDR therapy sessions, focusing on the processing of emotionally charged pain-related events and addressing the pain itself. Main tasks for participants include active engagement in EMDR therapy sessions. Treatment outcomes, including changes in pain intensity, anxiety levels, sleep quality, and personalized pain-related limitations, will be monitored throughout the study.
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Pain intensity measured with the Numeric Rating Scale (NRS)
Timeframe: Pain intensity is assessed once daily in the evening for a maximum of 154 days (throughout all phases of the study (phase A, phase B, phase C, post-assessment phase, and follow-up phase.)