Young children could thus avoid this surgical procedure. However, if a biopsy is required in the muscle, it can be conducted as a needle biopsy under local anesthesia. Importance of correct diagnosis: It is important that your doctor arrives at a formal diagnosis because there are other diseases that can give the same symptoms as Duchenne Muscle Dystrophy and Becker. That is why it is important to do genetic testing and muscle biopsy before assuming that it is about this condition.