👉 Exogastritis is a condition in which the sphincter of Oddi, a muscle located near the entrance to the urethra, is unable to maintain its normal function. This can lead to discomfort and pain when urinating, especially if it's not properly flushed out. It's often accompanied by other symptoms such as fever, nausea, and fatigue. Exogastritis can be caused by various factors such as trauma or injury, infections, or certain medications. Treatment may include medication