The Difference Between Skin Tags and Moles: Identification Guide

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Navigating the world of skin growths can be confusing, with skin tags and moles often mistaken for one another. At City Dermatology Clinic, our expert medical team is dedicated to providing clear information and effective treatment options. This guide will help you understand the fundamental differences between skin tags and moles, ensuring you are informed about your skin health and the services we offer to address these common skin concerns.

What Are Skin Tags?

Skin tags, medically known as acrochordons, are small, benign skin growths that typically form in areas where the skin folds or creases. These growths are composed of loose collagen fibers and blood vessels surrounded by a thin layer of skin. Although skin tags are harmless and generally painless, they can be a cosmetic concern or become irritated by clothing or jewellery.

What does a skin tag look like?

Skin tags are usually flesh-coloured or slightly darker and appear as soft, hanging skin. They vary in size from a few millimeters up to 5 centimeters in diameter at their largest. Skin tags are typically attached to the underlying skin by a small, thin stalk known as a peduncle.

Skin tags can appear almost anywhere on the body but are most commonly found in areas where skin rubs against skin or clothing, including:

  • Neck: One of the most frequent locations for skin tags due to collar friction and natural skin folds.
  • Armpits: The constant rubbing of the arm against the body makes this area particularly prone to developing skin tags.
  • Groin: Similar to the armpits, the groin has natural skin folds and experiences regular friction, leading to skin tags.
  • Eyelids: Although skin tag on eyelids are less subjected to friction, the thin skin of the eyelids can develop small skin tags.
  • Under the breasts: Especially in women, the underside of the breasts is a common area for skin tags due to the combination of skin friction and moisture.

The types of Skin Tags

While skin tags are generally uniform in their soft, fleshy appearance, they can vary in terms of size and colour. Some skin tags remain very small, almost pinpoint-sized, while others can grow larger. In some cases, particularly with larger skin tags, there might be some colour variation, often becoming slightly darker than the surrounding skin. This variation is typically benign but should be monitored for any sudden changes that might require medical attention.

Why do Skin Tags Form?

The exact cause of skin tags is not completely understood, but they are thought to be related to friction which explains their prevalence in skin fold areas. Other factors such as genetics, age, and insulin resistance associated with type 2 diabetes are also believed to contribute to their development. Skin tags are incredibly common in adults, and their likelihood increases with age.

What Are Moles?

Moles, scientifically referred to as nevi, are common skin growths that consist of clusters of pigmented cells known as melanocytes. They are usually brown or black, although some may be flesh-coloured or yellowish, and can appear anywhere on the body. Moles can develop individually or in groups and are generally harmless, though they require monitoring for changes that could indicate melanoma, a serious form of skin cancer.

What do Moles look like?

Moles are typically round or oval and have a smooth, even border. They can be flat or raised, and while most moles are less than a quarter-inch in size, some can be larger and vary in texture. Moles might also grow hairs, which, although potentially unappealing, is completely normal.

Where do Moles appear on the body?

Moles can appear anywhere on the body, including areas that are not commonly exposed to the sun, such as the scalp, armpits, under the fingernails, and between the toes. However, they are commonly found in sun-exposed areas, which include:

  • Face: Exposed to sunlight frequently, making it a common area for moles.
  • Arms: Regular sun exposure and visibility often lead to mole development on the arms.
  • Back: A prevalent area for moles due to its large surface area and exposure to the sun.
  • Legs: Particularly in women, the legs are a common site for moles, correlating with sun exposure patterns.

What are the different types of Moles?

Moles vary widely in appearance, which can include:

  • Congenital nevi: Moles present at birth, found in about 1 in 100 people. These are more likely to develop into melanoma than moles that appear after birth.
  • Dysplastic nevi: Larger than average moles that are irregular in shape and colour. They are more likely than ordinary moles to progress to melanoma.

Why do Moles Form?

Moles form when melanocytes, the cells responsible for skin pigment, grow in clusters rather than being distributed throughout the skin. Most people begin to develop moles during childhood and adolescence, and the number can change over time. Sun exposure can play a role in the number of moles a person has, as it stimulates melanocytes, which can increase melanin production and potentially lead to mole formation.

Like skin tags, most moles are benign and only require removal if they show signs of melanoma or for cosmetic reasons. Monitoring moles for any changes in size, colour, shape, or texture is crucial. Changes that warrant further investigation include asymmetry, irregular borders, uneven colouration, and an increase in size.

Comparing Skin Tags and Moles

Understanding the differences between skin tags and moles is crucial for proper skin care and treatment. While both are common skin growths, they differ significantly in their potential health implications and the reasons for their removal. This section will provide a clear comparison of skin tags and moles, focusing on their appearance, locations, and the importance of each in terms of medical concern.


  • Skin Tags: Typically small, soft, and hanging off the skin by a stalk. They are usually flesh-coloured or slightly darker and do not change in size or colour over time.
  • Moles: Generally flat or raised, round, or oval with a smooth border. They are commonly dark brown or black, though they can also be skin-coloured or pink and may change over time in size, colour, and texture.


  • Skin Tags: Soft and movable, attached by a thin peduncle.
  • Moles: Can be smooth or rough, some may have hair growing from them, and they are usually more firmly embedded in the skin.

Location on the Body

  • Skin Tags: Most commonly found in areas of friction such as the neck, armpits, groin, and under the breasts.
  • Moles: Can appear anywhere on the body but are frequently located in sun-exposed areas like the face, arms, and back.

Medical Concerns

  • Skin Tags: Primarily a cosmetic concern, rarely if ever associated with cancer. Removal is often sought for aesthetic reasons or because they cause discomfort when they rub against clothing or jewelry.
  • Moles: While often harmless, they require monitoring for changes that could indicate melanoma, a serious skin cancer. Any mole that changes in size, shape, colour, or texture, or that bleeds, itches, or becomes painful should be evaluated by a healthcare professional.

Reasons for Removal

  • Skin Tags: Typically skin tags are removed if they are irritating, get caught on clothing or jewelry, or for cosmetic improvements. Methods like surgical excision and electrocautery are common for skin tag removal.
  • Moles: Removed for biopsy to check for cancer if they show suspicious changes, or for cosmetic reasons. Techniques such as shave excision or excision with stitches are used depending on the mole’s characteristics, for mole removal.

Importance of Professional Diagnosis

Correct identification and understanding of skin tags and moles are essential for addressing them appropriately. While skin tags are generally benign, moles can sometimes develop into melanoma, making professional evaluation and potential removal critical. It is recommended that individuals undergo regular skin checks to monitor for any changes in their skin growths, particularly moles, and to consult with a dermatologist for proper assessment and treatment.

Treatment Options for Skin Tags and Moles

At City Dermatology Clinic, we offer a range of treatments tailored to safely and effectively address both skin tags and moles, ensuring optimal cosmetic results and patient comfort. Understanding the specific methods used for each can help you decide the best course of action for your skin concerns.

Skin Tag Removal Techniques

Surgical Excision & Electrocautery:

  • This method involves numbing the area with local anesthesia for a pain-free experience. Using surgical scissors or a scalpel, our skilled doctors carefully remove the skin tag, ensuring a precise and clean result. This technique is particularly effective for larger skin tags and those located in sensitive areas where accuracy is essential for both effectiveness and aesthetic outcomes.
  • For smaller to medium skin tags, electrocautery is an excellent option. This technique uses a specialised probe heated by electric current to burn away the skin tag while cauterising the area to prevent bleeding. It’s highly precise, allowing for targeted removal with minimal impact on surrounding skin, making it ideal for treating skin tags on the face or neck.

Mole Removal Options

Shave Excision and Excision with Stitches:

  • This less invasive method involves trimming the mole down to skin level using a sharp blade. If necessary, electrocautery may be used to stop any bleeding. This technique does not typically require stitches, which helps reduce scarring and is favoured for moles in visible areas like the face.
  • For deeper or larger moles, excision with stitches is necessary. The entire mole, along with a margin of surrounding tissue, is cut out under local anesthesia, and the area is closed with stitches. This method not only removes the mole completely but also allows for a detailed examination to ensure there are no cancerous cells, providing peace of mind alongside thorough treatment.

Choosing the Right Treatment

The choice of treatment depends on various factors, including the size, location, and nature of the skin growth. Our experienced doctors at City Dermatology Clinic will evaluate your specific situation and recommend the most suitable treatment method. We aim to ensure that all treatments not only meet medical needs but also achieve the best possible aesthetic results.

Our commitment to patient care extends beyond the treatment room. We provide comprehensive guidance on what to expect during the procedure and how to care for the treated area afterward, ensuring a smooth recovery and the best possible outcomes.

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