What Causes Moles?
Moles can have various causes, just like most other symptoms. 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 moles, 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 "moles" as a symptom. For example, melanoma.
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:

light eye color

very many irregular dark moles

black/brown fingernails

melanoma in family members

dark lines under nails

history of melanoma

melanoma

minor mouth sores

bleeding/enlarging/tender moles

light hair

lighter/paler skin color
... and so on
Step 3: Rule Out or Confirm each Possible Cause
A differential diagnosis of your symptoms and risk factors finds the likely cause of moles.
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
Existing Skin Conditions section of the questionnaire,
The Analyst™ will ask the following question about how many moles you have:
How many normal (common) moles do you have? Normal moles have a uniform light tan/brown color and are almost perfectly round.
Possible responses:
→ Don't know
→ 10 or fewer
→ Between 10 and 50
→ Between 50 and 100
→ More than 100
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Based on your response to this question, which may indicate either having many common moles or having very many common moles,
The Analyst™ will consider possibilities such as
Melanoma. A person who has more than 50 common moles has a higher risk of developing melanoma and should check their skin regularly to look for abnormal changes.
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