Nighttime Urination (Nocturia)

What Causes Nighttime Urination (Nocturia)?

Nighttime urination can have various causes, ranging in severity from 'troubling' to 'generally fatal'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

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Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose nighttime urination, we could:

  • Research the topic
  • Find a doctor with the time
  • Use a diagnostic computer system.
The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "nighttime urination" as a symptom.  Here are eight of many possibilities (more below):
  • Hyperparathyroidism
  • Urinary Tract Infection
  • Congestive Heart Failure
  • Diabetes II
  • Fibroids
  • Prostate Cancer
  • Interstitial Cystitis
  • Kidney Disease

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:
low HDL cholesterol level
very long menstrual cycles
recent onset nausea
occasional unexplained nausea
pale facial coloring
long-term low-carb dieting
infrequent daytime urination
very weak urine stream
reduced mental clarity
past heroin/morphine use
painful deep penetration during sex
possibly jaundiced skin
... and more than 80 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of nighttime urination:
Cause Probability Status
Interstitial Cystitis 92% Confirm
Diabetes II 29% Unlikely
Prostate Cancer 18% Unlikely
Congestive Heart Failure 4% Ruled out
Fibroids 3% Ruled out
Hyperparathyroidism 2% Ruled out
Urinary Tract Infection 0% Ruled out
Kidney Disease 0% Ruled out
* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

In the Urinary Symptoms section of the questionnaire, The Analyst™ will ask the following question about nighttime urination (nocturia):
Nighttime urination. On average, about how many times do you get up to urinate during your sleeping hours?
Possible responses:
→ Rarely / only if I drink too much / don't know
→ Once
→ Twice
→ Three times
→ Four or more times
Based on your response to this question, which may indicate little or no nighttime urination, nighttime urination or frequent nighttime urination, The Analyst™ will consider possibilities such as:
Congestive Heart Failure

Edema fluid that collects in tissues during the day due to heart failure can result in increased night time urination.

Fibroids

Fibroids can lead to increased urinary frequency and urgency.

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