What might severe urinary symptoms include?

Severe urinary symptoms often encompass a range of issues that significantly impact an individual's quality of life. Frequent urination with minimal volume can be a hallmark of bladder irritability, often leading to a sense of urgency without sufficient urine output. This can present as a person needing to rush to the bathroom only to produce small amounts of urine.

Additionally, urgency, which is the sudden and compelling urge to urinate, often accompanies frequent urination and can result in nocturia—waking at night to urinate. These symptoms reflect a dysfunction in the urinary system, particularly involving the bladder's storage and voiding capabilities.

Complete urinary retention, while certainly a serious condition, is typically characterized by an inability to urinate despite a full bladder. It's an extreme form of urinary dysfunction that may be associated with severe cases of urinary tract issues, but it does not always correlate with the broader category of severe urinary symptoms as seen in the combination of frequent urination and urgency.

Thus, recognizing both frequent urination with minimal output and urgency with nocturia as symptoms adds depth to understanding the range of severe urinary symptoms that can affect patients, making the option of both A and B the correct choice in this context.