Detrusor Sphincter Dyssynergia (DSD) is a Neurological condition where there is a Lack of coordination between the Bladder muscle (detrusor) and the External Urethral Sphincter during urination, leading to Urinary Retention or Obstructed flow. It often occurs in patients with Spinal Cord Injuries or Multiple Sclerosis, and can result in complications such as Urinary Tract Infections and Kidney Damage if not managed properly.