Interstitial Cystitis (IC) is a chronic bladder condition causing pain, pressure, and frequent urination. The exact cause is unclear, but it may result from bladder lining defects, nerve dysfunction, or autoimmune activity. Symptoms vary from mild discomfort to severe pain and can significantly impact quality of life. Treatments include dietary changes, physical therapy, bladder instillations, and medications to reduce inflammation and pain. Lifestyle adjustments and stress management can also help control symptoms.