Nocturnal Polyuria
Nocturnal polyuria is a condition where the body produces too much urine during the night compared to the daytime. This can cause people to wake frequently to pass urine during the night.
Nocturnal polyuria is more common in older adults and can have several different causes.
Common Symptoms
- Waking several times during the night to urinate
- Large amounts of urine passed overnight
- Poor sleep or daytime tiredness
- Swollen ankles in the evening
Common Causes
Evening Fluid Intake
Drinking large amounts in the evening, including water, tea, coffee, soft drinks or alcohol, may increase urine production overnight.
Foods With High Water Content
Foods such as salads, vegetables, fruit, rice and pasta can contribute to increased fluid levels in the body during the evening.
Swollen Ankles or Legs
Fluid can collect in the legs or ankles during the day and return to the bloodstream at night when lying down, increasing urine production.
Sleep Apnoea
Loud snoring and interrupted breathing during sleep may be linked to nocturnal polyuria and should be discussed with a doctor.
What Can Help?
- Spread your fluid intake evenly throughout the day.
- Try eating lighter and drier foods in the evening.
- Reduce alcohol and caffeine in the evening.
- Exercise regularly if appropriate for your health.
- If overweight, gradual weight loss may help reduce snoring and sleep apnoea symptoms.
- Seek medical advice if you regularly snore or feel exhausted during the day.
If You Have Swollen Ankles
Managing swelling in the legs and ankles may help reduce urine production overnight.
- Raise your feet after lunch or while watching television.
- Your feet should be raised to heart level where possible.
- Elastic compression stockings may help some people.
- Your doctor may prescribe medication such as Frusemide to help remove excess fluid earlier in the day.
When To Seek Medical Advice
Please speak to your GP or healthcare professional if:
- You regularly wake multiple times every night to urinate
- You have swollen ankles or shortness of breath
- You snore heavily or feel extremely tired during the day
- Your symptoms suddenly worsen
Bladder and Bowel Service
If you require further advice or support, please contact your local Bladder and Bowel Service or speak with your GP.
