Stress
SYMPTOMS: Leakage w/ increased intraabdominal pressure (sneezing, coughing, laughing)
MECHANISM: Urethral Hypermobility, or Intrinsic Sphincter Deficiency

Urge
SYMPTOMS: Sudden unexpected need to void, w/ subsequent leakage
MECHANISM: Detrusor Overactivity

Mixed
SYMPTOMS: Leakage w/ increased intraabdominal pressure & episodes of sudden leakage
MECHANISM: Both Stress & Urgency Mechanisms

Overflow
SYMPTOMS: Incomplete bladder emptying leads to dribbling or continuous stream
MECHANISM: Detrusor Underactivity, or Bladder Outlet Obstruction