High blood sugar may not be able to urinate. Difficulty in urination is related to neurogenic bladder, or prostatic hyperplasia or stones, etc. It is recommended to consult a doctor in time. 1. Neurogenic bladder: It may be due to high blood sugar causing damage to the bladder sphincter and nerves, resulting in urinary retention and symptoms of difficulty in urination. 2. Prostatic hyperplasia: When the prostate gland is enlarged, it may press on the urethra, causing urethral obstruction, which may cause urinary difficulty. 3. Stones: When stones are present at the bladder opening, they may block the urethra and cause urethral stricture. This causes urine to be trapped in the bladder, resulting in the urge to urinate but difficulty in urination. When difficulty in urination occurs, it is recommended to consult a doctor for further examination as prescribed by the doctor, to clarify the cause with the help of the doctor, and to carry out targeted treatment or therapy.