Which of the following conditions is characterized by a painful erection that is prolonged?

• A. Priapism
• B. Nocturia
• C. Urolithiasis
• D. Incontinence

Answer: (A)

The condition characterized by a painful and prolonged erection is known as priapism. Priapism occurs when blood becomes trapped in the erection chambers of the penis, resulting in an extended erection that can last for hours, often without sexual stimulation. This condition can be quite painful and requires medical attention to prevent damage to the erectile tissue, which can lead to erectile dysfunction.

The other conditions listed do not involve painful erections or prolonged states related to erections. Nocturia refers to excessive urination at night, urolithiasis involves the formation of stones within the urinary tract, and incontinence deals with the inability to control urination. None of these conditions captures the essence of priapism, which is specifically tied to an abnormal and painful state of erection.