Bleeding Between Periods

What Causes Bleeding Between Periods?

Bleeding between periods can have various causes, ranging in severity from 'needs attention' to 'generally fatal'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose bleeding between periods, 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 "bleeding between periods" as a symptom.  Here are eight possibilities (more below):
  • Endometrial Cancer
  • Low Progesterone
  • Ovarian Cysts
  • Endometrial Hyperplasia
  • Ovarian Cancer
  • Endometriosis
  • Hypothyroidism
  • Adrenal Fatigue

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:
high iodine consumption
late term miscarriage
hypothyroidism in family members
very low free T4
severe lower-left abdominal pain
temple-based headaches
frequent unexplained fevers
history of hyperthyroidism
prednisone use
hot flashes during period
low energy/stamina
mildly elevated TSH
... and more than 140 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of bleeding between periods:
Cause Probability Status
Low Progesterone 92% Confirm
Hypothyroidism 13% Unlikely
Adrenal Fatigue 22% Unlikely
Endometrial Cancer 1% Ruled out
Endometriosis 1% Ruled out
Ovarian Cysts 1% Ruled out
Endometrial Hyperplasia 1% Ruled out
Ovarian Cancer 1% 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.

If you indicate being premenopausal or being perimenopausal, The Analyst™ will ask further questions including this one:
Do you have bleeding between periods?
Possible responses:
→ Don't know
→ No
→ Occasionally / moderately
→ Often / severely
Based on your response to this question, which may indicate either absence of bleeding between periods or bleeding between periods, The Analyst™ will consider possibilities such as:
Prolonged and/or heavy periods are a sign of hypothyroidism.