What condition may cause a person to experience difficulty beginning and continuing to void urine?

The condition that typically causes difficulty in beginning and continuing to void urine is prostate enlargement, also known as benign prostatic hyperplasia (BPH). As the prostate gland enlarges, it can compress the urethra, which is the tube that carries urine from the bladder out of the body. This compression leads to obstructive symptoms, making it hard for men to initiate urination and maintain a steady flow.

In this context, while kidney stones and bladder infections can lead to urinary issues, they do not specifically cause the same obstructive symptoms associated with urinary initiation and continuation that are characteristic of prostate enlargement. Kidney stones can create pain or the sensation of needing to urinate, but typically don't cause difficulty specifically in starting the urination process. A bladder infection may cause urgency and frequency but is not primarily associated with the inability to void urine at the start or maintain a flow. Urinary incontinence refers to a lack of control over urination instead of difficulty with the starting process.

Hence, prostate enlargement is the most relevant condition among the options given that leads to difficulty in starting and continuing urination.