👉 Hydronephelite is a type of kidney stone. It is formed when the urethra becomes blocked by calcium or other minerals, which can cause inflammation and blockage in the urinary system. This condition can cause pain and discomfort during urination, as well as difficulty passing urine. The symptoms can vary from person to person, but they are usually mild and may be relieved with medication or surgery. If left untreated, hydronephelite can lead to kidney failure if it is not treated