Nocturia can arise from 2 documented medical conditions. Understanding the clinical context helps identify urgent causes early.
Benign Prostatic Hyperplasia (BPH)
BPH is non-malignant enlargement of the prostate gland causing lower urinary tract symptoms including weak stream, frequency, urgency, and nocturia. It is nearly universal in men over 80; alpha-blockers and 5-alpha reductase inhibitors are first-line treatments.
Overactive Bladder
Overactive bladder is characterized by urinary urgency with or without urge incontinence, increased daytime frequency, and nocturia. It affects up to 16% of adults.
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