What Are Geriatric Warts (Seborrheic Keratoses)?
First and foremost, it's important to clarify that "geriatric warts" are not true warts. The correct medical term is seborrheic keratosis (SK), and unlike warts, they are not caused by a virus and are not contagious. They are benign (non-cancerous) skin growths that appear most often in middle-aged and older adults.
SKs can appear anywhere on the body, except the palms and soles, and commonly form on the face, chest, shoulders, and back. They have a characteristic "stuck-on" or waxy appearance, and their color can range from light tan to dark brown or black. While they are harmless, they can sometimes cause discomfort or itching if they rub against clothing.
Medical Procedures for Removal
For those who wish to have their SKs removed for cosmetic reasons or to alleviate irritation, a dermatologist offers several in-office procedures. The specific method chosen depends on the size, location, and thickness of the growth.
- Cryotherapy: This is a very common method where a doctor uses liquid nitrogen to freeze the growth. The frozen lesion will typically blister and then fall off within a few days or weeks. One potential side effect is the skin becoming lighter (hypopigmentation) in the treated area, especially in individuals with darker skin.
 - Electrosurgery and Curettage: In this procedure, the doctor numbs the area, then uses an electric current to burn the growth (electrosurgery), and scrapes away the remaining tissue with a scoop-shaped surgical tool called a curette. This is often used for thicker growths.
 - Shave Excision: After numbing the area, a doctor can use a scalpel to carefully shave off the growth. This method is often preferred when a biopsy of the tissue is needed to confirm the diagnosis.
 - Laser Therapy: Lasers can be used to destroy the SK with a high degree of precision. This can result in excellent cosmetic outcomes but may have a longer recovery period.
 - Topical Solution: A prescription-strength hydrogen peroxide solution (40%) is a non-invasive option approved by the FDA for raised SKs. It is applied in a doctor's office, but multiple sessions may be needed, and it can cause temporary side effects like redness and scaling.
 
The Importance of Professional Diagnosis
While most SKs are benign, it is crucial to have any new or changing skin growths evaluated by a board-certified dermatologist. This is because SKs can sometimes be mistaken for more serious skin cancers, like melanoma. A dermatologist can accurately diagnose the growth, and if there is any doubt, perform a biopsy to ensure it is not cancerous.
If you notice any of the following changes, you should consult a doctor:
- A growth that is growing rapidly.
 - A lesion that changes in size, shape, or color.
 - A growth that has irregular borders.
 - A lesion that bleeds or doesn't heal.
 
Seborrheic Keratosis vs. Other Common Skin Growths
Because SKs can mimic other skin conditions, a professional diagnosis is vital. The table below compares SKs to other common skin lesions.
| Feature | Seborrheic Keratosis (SK) | Warts | Moles | Actinic Keratosis (AK) | 
|---|---|---|---|---|
| Cause | Exact cause unknown; linked to genetics and aging. | Human Papillomavirus (HPV). | Clusters of pigment-producing cells. | Sun exposure. | 
| Appearance | Waxy, scaly, often appears "stuck-on"; tan, brown, or black. | Flesh-colored, white, pink, or tan; rough texture. | Flat or raised, dark spots; can be tan, brown, or black. | Rough, scaly patches; often reddish or skin-colored. | 
| Contagious? | No. | Yes. | No. | No. | 
| Risk | Benign; not cancerous. | Benign; rarely associated with cancer. | Usually benign, but some may become cancerous. | Pre-cancerous; can develop into squamous cell carcinoma. | 
| Location | Face, scalp, chest, back, neck (not palms or soles). | Anywhere on the body. | Anywhere on the body. | Sun-exposed areas like face, hands, and arms. | 
Conclusion
While the term "geriatric warts" is a misnomer, the skin growths it describes are common and usually harmless. Seborrheic keratoses are a natural part of the aging process for many individuals. If you find these lesions bothersome due to their appearance or irritation, consulting with a dermatologist provides several effective and safe options for removal, including freezing, scraping, or laser treatments. Most importantly, getting a professional evaluation is essential to confirm the diagnosis and rule out any potential for skin cancer.
For more detailed information on dermatological conditions, consider visiting the American Academy of Dermatology website.