Overactive Bladder: Symptoms, Causes, and Modern Treatment Options
April 5, 2026 · 7 min read
Overactive bladder (OAB) affects roughly 33 million Americans and can profoundly affect daily life — from interrupted sleep to anxiety about leaving the house. Many sufferers assume it's an inevitable part of aging. It isn't. Dr. Christopher Vendryes, MD offers a full range of OAB treatments at his Plantation, FL practice.
What Is Overactive Bladder?
OAB is a clinical syndrome defined by urinary urgency, usually with frequency (more than 8 voids per day) and nocturia (waking at night to urinate), with or without urge incontinence. It is caused by involuntary bladder muscle contractions during the storage phase.
Common Causes and Triggers
Causes include aging, neurologic conditions (Parkinson's, multiple sclerosis, stroke), bladder irritants (caffeine, alcohol, artificial sweeteners), pelvic surgery, and in men, an enlarged prostate. Identifying and modifying triggers is often the first step.
First-Line Treatments
Behavioral strategies — bladder retraining, timed voiding, pelvic floor exercises, fluid management, and weight loss — are highly effective and have no side effects. Dr. Vendryes often recommends a bladder diary to identify patterns before starting medication.
Medications
Anticholinergics (oxybutynin, tolterodine, solifenacin) and beta-3 agonists (mirabegron, vibegron) relax the bladder muscle to reduce urgency and frequency. Each class has distinct side effect profiles, allowing therapy to be tailored to the individual.
Advanced Therapies
For patients who don't respond to medication, Dr. Vendryes offers third-line treatments: bladder Botox injections (effective for 6–12 months per treatment), percutaneous tibial nerve stimulation (PTNS), and sacral neuromodulation (Interstim) — an implantable device that regulates the nerves controlling the bladder.
When to Seek Help
Don't ignore OAB symptoms. Effective treatments exist at every stage. If urgency, frequency, or leakage is affecting your quality of life, sleep, or activities, schedule an evaluation.
Frequently Asked Questions
Is overactive bladder curable?
Most cases are dramatically improved or controlled with a combination of behavioral changes, medications, and — when needed — advanced therapies like Botox or neuromodulation.
What is the best medication for overactive bladder?
There is no single best medication. Beta-3 agonists like mirabegron are often preferred for older adults due to fewer cognitive side effects than anticholinergics.
How does bladder Botox work?
Botox is injected into the bladder muscle during a brief office cystoscopy. It relaxes the muscle, reducing urgency and leakage for 6 to 12 months per treatment.
Ready to Take the Next Step?
Schedule a consultation with Dr. Christopher Vendryes by calling (954) 943-1133 or Book an Appointment online today.