[Lupus interstitial cystitis. Apropos of a case].

We report a case of lupus interstitial cystitis in 17 year-old female. The patient presented with suprapubic pain, urinary frequency, dysuria, nocturia and no bacterial growth. Intravenous pyelography showed a low capacity bladder with thickwall, and a bilateral ureterohydronephrosis. Interstitial cystitis was confirmed on bladder biopsy specimen. Clinical symptoms remained eventhough after steroid treatment. Clinical signs of cystitis occurring in a patient with systemic lupus erythematous could be a manifestation of a lupus cystitis.