Electrosurgery in Dermatology: What Patients Should Know

How Electrosurgery Works

An electrosurgical device delivers electrical current through a small electrode (tip) to the skin. The electrical energy converts to heat at the point of contact, allowing the dermatologist to precisely:

• Cut tissue (electrosection): Acts like an electrical scalpel for precise cutting
• Destroy tissue (electrodesiccation/fulguration): Dehydrates and destroys superficial tissue — used for skin tags, warts, and benign growths
• Stop bleeding (electrocoagulation): Seals blood vessels during surgical procedures

Common Uses in Dermatology

• Skin tag removal: Quick touch of the electrode destroys the tag instantly. One of the most common uses.
• Wart treatment: Electrodesiccation destroys wart tissue. Often combined with curettage (scraping). 65-85% clearance rate.
• Seborrheic keratoses: Brown, waxy "barnacles of aging" easily removed with light electrodesiccation and curettage
• Cherry angiomas: Small red blood vessel spots — destroyed in seconds
• Spider veins (face): Fine facial blood vessels treated with precise electrocoagulation
• Basal cell carcinoma: Electrodesiccation and curettage (ED&C) is a standard treatment for superficial BCCs — the tumor is scraped away and the base is cauterized, typically repeated 2-3 times
• Hemostasis during surgery: Stops bleeding from small blood vessels during Mohs surgery, biopsies, and excisions

What to Expect

Before: Local anesthesia (numbing injection) is administered to the treatment area. You'll feel the initial needle prick but not the electrosurgery itself.

During: A brief buzzing sound as the electrode touches tissue. You may notice a mild burning smell (normal — it's tissue being cauterized). Each lesion takes seconds to minutes.

After:

• Small wound that scabs over within 24-48 hours
• Keep clean and apply petroleum jelly until healed (1-3 weeks depending on size and location)
• Mild tenderness for 1-2 days
• Avoid picking or scratching the scab
• Sun protection on the healed area for several months to prevent hyperpigmentation

Scarring

Superficial electrosurgery (skin tags, small keratoses) typically leaves minimal scarring — often just a slightly lighter or darker spot that fades over months. Deeper electrosurgery (ED&C for skin cancer) produces a round, flat scar that gradually fades. The trade-off is appropriate: complete removal of the growth with acceptable cosmetic result.

Frequently Asked Questions

Is electrosurgery the same as laser?

No. Electrosurgery uses electrical current; lasers use focused light. Both can destroy tissue, but they work through different mechanisms. Electrosurgery is generally less expensive and more widely available. Lasers offer more precision for certain conditions (vascular lesions, pigmentation, resurfacing).

Can I remove skin tags at home with electrical devices?

Home devices are not recommended. Professional electrosurgery uses calibrated, sterile equipment with local anesthesia. DIY devices risk burns, infection, scarring, and improper removal (leaving roots that regrow). Some growths that look like skin tags may be something else — a dermatologist should evaluate before removal.

Does it hurt?

With local anesthesia, you should feel no pain during the procedure — only pressure or mild warmth. The numbing injection itself is the most uncomfortable part (a brief sting). Post-procedure discomfort is minimal, similar to a small scrape.