Drinking too much water, caffeine, or alcohol before bed.
When your body produces too much urine at night.
Benign prostatic hyperplasia (BPH)
A larger than normal prostate.
Overactive bladder (OAB)
A problem with bladder function that causes the sudden need to urinate.
Your doctor may have already prescribed medicine and spoken to you about the need to urinate at night. However, those medicines may not be treating the source of nocturia. Ask your doctor about nocturia as a separate condition.