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Crusty Moles: Causes, Symptoms and Treatments


What is the meaning of crusty mole? What causes them and how can we get rid them. We’ll tackle what can cause these crusty moles and how you can get rid of them naturally and medically.

Crusty mole causes and symptoms
crusty mole picture

What are they? Well, as explained by, "moles also known as melanocytic nevus are small lesions in the skin. They are a collection of melanocytes and melanocytes are the melanin-producing cell that gives a skin its color." In simple terms, they are growths on the skin that are normally black or brown in color and can grow anywhere on the skin. They can be alone or appear in clusters.

They usually result when the cells (melanocytes) on the skin grows in a cluster rather spreading. Exposure to the sun may darken them.


Before we proceed to what causes crustiness moles on the skin, it is worth to understand what the phrase “crust’ stands for. Basically, a crust is formed the outer layer of solid matter when body exudates or secretions dry over the skin surface.

So, why would moles be crusty? To get the correct answer, we should see what they contain. Here is what a mole could contain: 

  • Blood vessels
  • Immune system cells
  • Minor nerve fibers
  • Sweat glands, oil glands, and hair follicles

Having familiarized with their structure, let us see what can make them crusty

1.   Dryness

Factors and conditions that can make them dry can lead to crustiness. These usually involve disorders that can limit the production of sebum or condition that can rob the natural oil of the moles. They may include:

  • Hot baths
  • Excessive skin washing 
  • Harsh soap and detergents or the use of wrong cosmetics

2.   Skin Infections

Whether bacterial, fungal or viral infection, all can contribute crustiness. These infections may result in sore moles which may develop crust while they to tend to heal. 

3.   Injuries

Moles injuries can damage its skin leaving behind open sores. The exudates resulting from sores will dry leading to the development of crusts. Also, if they scratched maybe if they are itchy, they may form sore and they will tend to be crusty as they heal.

4.   Skin Conditions

There are many skin conditions that can result in this problem. They can emerge due to allergens, irritants, infections, due to side effects of certain medications or as a result of systemic health conditions such as heart, kidney or lung problems. Thyroid problems can also lead to dryness of the moles and thus make them crusty.

5.   Weather Changes

Changes in weather is another factor that can result to dry moles. Hot and dry weather can erode the natural oil that lubricates the skin. This will make them dry and thus can easily develop crusts. Measures to prevent dryness should be taken immediately changes in weather is discovered.


The earlier the crustiness on mole is identified on your skin and treated, the better.  Symptoms regarding this condition rely on the causes, they can mild or more serious. They can come and go or remain constant. See some of the common symptom or signs include:

  • Itching
  • Bleeding
  • Sports appear that look different from others.
  • Brown and black surfaces.
  • Red patches
  • Soreness 
  • Inflammation experienced by the victim.
  • Crusty and rough texture.

Other symptoms such as high fever, sores throat, vomiting, nausea and so forth signify life-threatening conditions that may not related to just the moles. Seek medical attention immediately in case of such symptoms.


The symptoms above or combination of them can be examined to know the reasons behind crustiness. Another important point to note is that many moles are benign and nothing to worry about. However, some that are cancerous or that appear after the age of 20 need to be checked

During diagnosis, there may be a physical examination. Medical and family history of the victim may also be evaluated. To determine whether their infection or not, a biopsy may be done.

You may also be asked questions regarding what soaps or cosmetic you are using. Your diet may also be scrutinized.  Once causes is known, proper treatment will be administered.


Can crusty moles be prevented or treated? What kind of treatment is effective? Can I try over the counter products, home remedies or must I go for prescribed treatments? 

Crusty moles treatment options


Also referred to as excision biopsy. It entails the entire crusty mole removal including the surrounding parts of unaffected skin is cut off. 

There are many other treatments such as freezing, laser removal, among others which your doctor or may recommend after assessing your case. 

Home Remedies

Home products are also effective and appropriate for treating crusty moles. Just choose one remedy and use it consistently.

 a) Use of baking soda

Baking soda and with castor oil can be mixed to make an effective home remedy for crusty mole. The mixture also helps in reducing the possibility of more dryness aftermath. Apply the mixture on the on the affected area once daily for better results. 

b)  Use of cider vinegar

Apple cider vinegar lowers the pH of the skin and also has antibacterial properties that make it ideal for fighting the bacteria causing crustiness. Imagine it’s just simple as that. It also has many nutrients that can nourish your skin. To apply this remedy:

  • Mix ½ cup of apple cider vinegar with water
  • Massage the mixture on the affected area and wait for 10 minutes
  • You need to repeat the procedure regularly for better results

C)  Use of lemon juice and coconut oil or honey.

First, lemon juice has antiseptic and moisturizing properties that can be very useful for many skin conditions. It also works well in getting rid of dead skin cells and leaving the rest of skin smooth and healthy.

Procedure 1: With coconut oil

  • Add a few drops of lemon juice to a warm cup of coconut oil
  • Apply the mixture to the affected mole and leave it to sit for some few minutes
  • Wash off using a shampoo and water

Procedure 2: With Honey

  • Get a fresh lemon juice and mix well with honey
  • Massage the mixture on the affected part for around 5 minutes and rinse off using warm water
  • You can repeat this procedure daily until you get your desired result

D) Aloe Vera Gel 

This is the king of herbs and has been in use to treat many skin conditions for years. It has cooling, soothing, moisturizing and cleansing properties that enable it to treat many skin disorders. There are many aloe Vera products available over the counter but we prefer fresh cut aloe gel. This is how aloe vera is applied:

  • Get fresh aloe gel from aloe leaf
  • Add a few drops of any essential oil if you wish
  • Massage the mixture on the affected area
  • You should leave it there for 20 minutes before rinsing off using water

E)  Use of tee tree oil

This another wonderful remedy for healing crusty mole. It has antibacterial properties that kill the bacteria that may cause infection. It can also be added to shampoo to effectively soothe a dryness. Tea tree oil can be applied following the procedure below:

  • You begin by mixing 5 drops of tea tree oil to your shampoo or conditioner
  • Use the mixture to wash the affected area
  • You can instead use tea tree based cleansers.

When to See Your GP

We have mentioned the fact that this is a condition that should not make us panic a lot. It can be easily healed at home but when over the counter products and home products becomes ineffective, you are supposed to see you GP immediately. Your crusty mole, in this case, may be due to something serious. Your GP or dermatologist may prescribe other treatment options.

List of Reference
  • Moles:
  • Common Moles, Dysplastic Nevi, and Risk of Melanoma:
  • Early Detection of Skin Cancer:
  • Suspicious moles – when to see a specialist:
  • Skin Cancer Image Gallery:
  • Tutorial B: The Secondary Lesions:
  • How to remove crusty moles: