The definition of cystitis is '''inflammation of the bladder'''. Under normal conditions, the bladder is resistant to bacterial infection, but anything that disrupts the normal passage of urine can damage and lead to irritation of the bladder wall lining - predisposing to inflammation and infection. | The definition of cystitis is '''inflammation of the bladder'''. Under normal conditions, the bladder is resistant to bacterial infection, but anything that disrupts the normal passage of urine can damage and lead to irritation of the bladder wall lining - predisposing to inflammation and infection. |