Urinary retention is a medical condition where a person is unable to completely empty their bladder. This can lead to discomfort, pain, and an increased risk of urinary tract infections. It can occur due to various reasons, including blockages in the urinary tract, nerve problems, or certain medications. Symptoms of urinary retention may include a weak urine stream, difficulty starting urination, or a feeling of fullness in the bladder even after urinating. Treatment options vary depending on the cause and may involve medications, catheterization, or surgery to relieve the blockage or issue affecting the bladder.