Our article will discuss bladder pain syndrome (BPS), which is the presence of chronic suprapubic pain to bladder filling accompanied by other urinary symptoms, such as frequency, urgency, discomfort with filling, and relief with emptying of the bladder in the absence of infections or other pathology. It is mostly seen in females and occurs in 0.06%-30% of the population. Some of the proposed mechanisms causing BPS include damage to the bladder lining, a problem manifesting in the pelvic musculature, endocrine, neurological, allergic, autoimmune system, and inflammatory system; however, a definite cause has not been yet identified. Two types of this syndrome have been identified, ulcerative and non-ulcerative. In the ulcerative disease, areas of reddened mucosa associated with small vessels radiating towards a central scar (at times, covered by a small clot or fibrin) can be seen. In the non-ulcerative type, a normal bladder mucosa can be observed initially, and the subsequent development of glomerulations after hydrodistension is considered a definite sign of its diagnosis. The diagnosis of BPS is primarily clinical; however, cystoscopy and biopsy can also be performed, if needed. Finally, we will discuss in detail the treatment of BPS, which constitutes three different guidelines (The European Association of Urology (EAU) Guidelines 2017, the American Urology Association (AUA) Guidelines 2014, and The Royal College of Obstetricians and Gynecologists (RCOG) in conjunction with the British Society of Urogynaecologists (BSUG) Guidelines 2016). All are proposing different types of therapy, including conservative, medical, and surgical treatment.
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