What are the differences between skin tags and filiform warts?

Sep 05, 2025 Source: Cainiu Health

Dr. Liu Wenmin

Introduction

Skin tags, also known as soft fibromas, are benign growths formed by excessive proliferation of skin connective tissue, and are associated with factors such as skin aging, frictional irritation, and obesity. Filiform warts, on the other hand, are caused by human papillomavirus (HPV) infection and belong to the category of viral dermatoses; the viral infection leads to abnormal proliferation of epidermal cells. Skin tags typically present as soft, flesh-colored or brownish projections with a smooth surface and a narrow, stalk-like base.

Although skin tags and filiform warts appear similar, they are fundamentally different. The distinctions generally manifest in aspects such as causes, appearance characteristics, common occurrence sites, contagiousness, and texture. Accurate differentiation can be achieved through these aspects. Detailed analysis is as follows:

1. Causes: Skin tags, also known as fibromas, are benign growths caused by excessive proliferation of skin connective tissue, and are associated with factors such as skin aging, frictional irritation, obesity, etc. Filiform warts are caused by human papillomavirus (HPV) infection and belong to viral skin diseases, where viral infection leads to abnormal proliferation of epidermal cells.

2. Appearance Characteristics: Skin tags typically appear as soft, flesh-colored or brownish projections with smooth surfaces, narrow bases resembling stalks, and a more rounded shape. Filiform warts are usually slender, thread-like projections with rough, uneven surfaces. Their color is similar to or slightly darker than the surrounding skin, and the tips may be branched.

3. Common Occurrence Sites: Skin tags commonly occur in areas subject to frequent friction or skin folds, such as the neck, armpits, groin, and inner thighs. Filiform warts commonly appear on exposed areas such as the eyelids, neck, forehead, and chin, where infection can easily occur due to contact transmission of the virus.

4. Contagiousness: Skin tags are non-contagious and do not spread to others through contact or friction. Filiform warts are contagious and can be transmitted through direct contact with the warts or indirect contact with contaminated objects. They may also spread to other areas of the body by autoinoculation.

5. Texture and Touch: Skin tags have a soft and elastic texture, feeling similar to normal skin tissue upon touch, and can deform when pressed. Filiform warts have relatively firmer texture and rough surfaces. A distinct raised and rough sensation can be felt upon touch, and the hardness does not significantly change when pressed.

If one cannot accurately differentiate between the two conditions, it is recommended to seek timely consultation at a dermatology clinic for professional examination and diagnosis. Skin tags generally do not require treatment unless they cause cosmetic concerns and can be removed if desired. Filiform warts require prompt treatment to prevent transmission and spread. In daily life, it is important to maintain skin cleanliness, avoid scratching affected areas, and reduce the risk of viral transmission or skin injury.

View All

What causes small grain-like bumps on the neck, and how should they be treated?

In general, the main causes of small grain-like bumps on the neck include sebaceous gland blockage, friction irritation, filiform warts, molluscum contagiosum, and folliculitis. Depending on the specific condition, patients may improve symptoms through conservative management, medication, or surgical treatment. In daily life, it is important to maintain neck cleanliness and use gentle skincare and cleansing products.

View Full Answer

What causes the growth of filiform warts?

Under normal circumstances, the development of filiform warts may be caused by factors such as weakened skin barrier function, prolonged friction on localized skin areas, infection with low-risk types of human papillomavirus (HPV), spread of flat warts, or evolution from common warts. It is recommended to seek timely medical attention, identify the underlying cause, and undergo symptomatic treatment under a doctor's guidance. In daily life, it is important to maintain skin cleanliness, avoid scratching affected areas with hands, and prevent the spread of the virus.

View Full Answer

What is the best ointment for treating filiform warts?

Under normal circumstances, there is no definitive answer to the question "what topical medication is best for treating filiform warts," as treatment effectiveness may vary among individuals. Commonly used topical medications include tretinoin cream, imiquimod cream, fluorouracil ointment, salicylic acid ointment, and interferon gel, which should be appropriately selected based on individual circumstances. Tretinoin cream works by regulating epidermal cell growth and promoting the shedding of warts.

View Full Answer

Do filiform warts spread to family members?

In general, filiform warts can be contagious to family members, but not all contact leads to transmission. The likelihood of transmission depends on factors such as the mode of contact and the skin condition of family members. It is important to avoid direct or indirect close contact in daily life to reduce the risk of infection. To minimize the risk of transmitting the infection to family members, patients should use personal hygiene items separately and regularly wash and disinfect towels, clothing, and other items.