Hemorrhagic cystitis, also known as haemorrhagic cystitis, is a condition that causes inflammation and bleeding in the bladder. There are several synonyms for this condition that healthcare professionals may use, including bladder bleeding, cystitis with bleeding, hemorrhagic bladder inflammation, and bloody cystitis. Other related terms may include painful bladder syndrome, interstitial cystitis, and radiation cystitis. The symptoms of hemorrhagic cystitis may include frequent and urgent urination, pain or discomfort during urination, and bloody urine. The condition can be caused by a variety of factors including infections, chemotherapy, radiation therapy, and certain medications. Treatment options may include antibiotics, pain management, and in severe cases, surgery.