[Botulinum toxin for overactive bladder].

Idiopathic overactive bladder (OAB) is defined as a symptom complex characterized by urinary urgency with or without urinary incontinence, nycturia and increased frequency of micturition without the presence of an infection or other pathological conditions, especially a neurological disease. It is a diagnosis by exclusion. If conservative treatment with behavioral therapy and pelvic floor muscle training alone is not successful, pharmaceutical treatment is recommended according to the OAB staged treatment. For treatment refractory OAB, intravesical injection of onabotulinum toxin A is recommended according to the current guidelines (recommendation level A). The approved dose is 100 U botulinum toxin and is transurethrally injected into the detrusor muscle. The treatment effect lasts on average for 6-9 months and injections can be repeated without limitations. Due to the low rate of complications, the good success rate and the low invasiveness, botulinum toxin offers a good treatment option for treatment refractory OAB.