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Strangury is the symptom described in Chinese traditional medicine of painful, frequent urination of small volumes that are expelled slowly only by straining and despite a severe sense of urgency, usually with the residual feeling of incomplete emptying.[1] These 'drops' of urine are 'squeezed out' in what sufferers describe as painful 'wrenching' spasms. The pain is felt to arise in the suprapubic region, extends up to the root of the genitalia and in male patients, to the tip of the penis. Also associated with few drops of blood at the end of micturition.

This distressing desire to fully void despite its impossibility is attributed to the irritation of urothelium (epithelium lining the urinary tract) and subsequent spasm of muscles. It is seen in numerous urological conditions including kidney stones (especially when a stone is impacted at the vesicourethral junction), bladder inflammation (cystitis), and bladder cancer.