The Therapeutic Effects of Dextrose Injection for Myofascial Pain Syndrome

This study tests whether injecting dextrose (a type of sugar water) into painful muscle knots — called myofascial trigger points — in the neck and upper back can reduce pain. This technique is called prolotherapy or dextrose injection. Researchers want to compare how well it works versus other standard treatments for myofascial pain syndrome. You may be eligible if... - You are 20 years of age or older - You have been diagnosed with myofascial pain syndrome (MPS) with a confirmed trigger point in your neck or upper back (upper trapezius muscle) - Your symptoms have been present for more than 3 weeks - You can communicate and understand the study instructions You may NOT be eligible if... - You have a serious medical condition, bleeding disorder, or are on blood thinners - You have a cognitive impairment or psychiatric disorder - You have hepatitis B or HIV/AIDS - You have cancer or diabetes - You are pregnant or may be pregnant Talk to your doctor to see if this trial is right for you.