Urinary Frequency (Pollakiuria)
Differential Diagnosis of Urinary Frequency
Urinary frequency is caused either by reduced bladder capacity or increased urine production.
Urinary Frequency due to Anatomically Reduced Bladder Capacity
- Bladder stones
- Compression of the bladder by pelvic tumors
- Bladder wall fibrosis
- Radiation cystitis
- Bladder cancer
Urinary Frequency due to Functionally Reduced Bladder Capacity
- Inflammation: e.g. bladder infection, prostatitis
- Postvoid residual urine by subvesical obstruction (e.g. BPH)
- Neurogenic bladder dysfunction
- Psychological causes
Urinary Frequency due to Increased Urine Production
Increased urine production is defined by a urine output of more than 2.5–3 l/24 h.
- Excessive drinking, psychogenic polydipsia
- Diabetes mellitus
- Diabetes insipidus
| Urethritis | Index | Urinary incontinence |
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Deutsche Version: Pollakisurie
Last update
Dr. med. Dirk Manski
man...@urologielehrbuch.de