Inclusion Criteria:  Diagnosed with Bladder Pain Syndrome/Interstitial Cystitis with chronic symptoms (more than 6 months) Bladder pain severity in the last week should be at least 3/10 according to the Visual Analogue Scale (VAS) Stable medication schedule Individuals over the age of 18 (individuals over 65 years of age with a Mini Mental Test score ≥ 24) voluntarily to participate in the study will be included.  Exclusion Criteria:  Acute disease state (with ongoing urinary tract infection, active vaginitis, active Herpes infection) Stones in the bladder, ureter, or urethra in the last 3 months Having an ulcer appearance on cystoscopy For women: during pregnancy and/or breastfeeding Previous history of urological and/or pelvic malignancy Congenital anomaly of the upper and/or lower urinary tract who have started a new drug treatment in the last 3 months, or undergoing implantation operation of neuromodulation devices Diagnosed with opioid dependence Neurogenic bladder dysfunction or concomitant neurologic conditions Not cooperating with assessment and/or treatment, and illiterate individuals