Surgery
Surgical interventions may be pursued if medical approaches have been maximized. Surgical options depend on the type of dysfunction observed on urodynamic testing, and may include:

Urinary Diversion: Creation of a stoma (from the intestines, called "conduit") that bypasses the urethra to empty the bladder directly through a skin opening. Several techniques may be used. One technique is the Mitrofanoff stoma, where the appendix or a portion of the ileum (‘Yang-Monti’ conduit) are used to create the diversion. The ileum and ascending colon can also be used to create a pouch accessible for catheterization (Indiana pouch). Urethral stents or urethral sphincterotomy are other surgical approaches that can reduce bladder pressures but require use of an external urinary collection device. Urethral slings may be used in both adults and children 
Artificial Urinary Sphincters have shown good term outcomes in adults and pediatric patients. One study on 97 patients followed for a mean duration of 4 years found that 92% percent were continent at day and night during follow up. However, patients in this study who had intermediate-type bladders underwent adjuvant cystoplasty. Bladder Neck Closure is a major surgical procedure which can be a last resort treatment for incontinence, a Mitrofanoff stoma is necessary to empty the bladder. Epidemiology
The overall prevalence of neurogenic bladder is limited due to the broad range of conditions that can lead to urinary dysfunction. Neurogenic bladder is common with spinal cord injury and multiple sclerosis. Rates of some type of urinary dysfunction surpass 80% one year after spinal cord injury.
Therapy in helping the patient understand the cause of the symptom and tinnitus retraining may provide some relief. In at least some cases, amplification makes no difference and there is no treatment other than waiting for natural resolution. Some individuals may find the provided amplification also increases the audibility of their pitch discrepancy. If onset is linked to an underlying medical cause, i.e. sudden sensorineural hearing loss, appropriate medical treatment is recommended. Etymology
Diplacusis is from the Greek words "diplous" (double) and "akousis" (hearing). See also
Hearing
Hearing loss
Pitch (psychophysics)
Auditory system

External sources
Diplacusis: I. Historical Review
Turner, Christopher. "Perception of Pitch." Wendell Johnson Speech and Hearing Center, Iowa City. Dec. 2008. Plack et al. (ed.). Pitch : Neural coding and perception. Springer. 2005. == References ==