What is the medical term for a scant amount of urine, less than 500 mL in 24 hours?

The term "oliguria" refers specifically to the production of a scant amount of urine, defined as less than 500 mL in a 24-hour period. This condition can be indicative of various medical issues, such as dehydration, kidney dysfunction, or obstruction of the urinary tract. Recognizing oliguria is important in clinical settings, as it may prompt further investigation and treatment.

The other terms mentioned are related to different urinary conditions. "Dysuria" describes painful or difficult urination, while "enuresis" refers to involuntary urination, often associated with nocturnal occurrences in children. "Hematuria" is the presence of blood in the urine, which can indicate issues such as infections or kidney stones. Understanding these distinct terms helps in assessing urinary health accurately.