Can a Space Heater Increase Your Risk of Skin Cancer?
As the weather turns colder, many people rely on space heaters, heating pads, and electric blankets to stay warm. But did you know that long-term use of these heat sources could actually cause skin damage and in rare cases, even increase your risk of skin cancer?
What Is Erythema Ab Igne?
A condition called erythema ab igne (Latin for “redness from fire”) refers to a purple, brown, or red net- or lace-like rash that develops on the skin after repeated exposure to intense heat. Common causes include:
- Space heaters
- Heating pads
- Electric blankets
- Hot laptops or other warm devices
Surprisingly, the heat source doesn’t even need to touch the skin directly for this rash to appear.
Symptoms and Appearance
In many cases, erythema ab igne is mild and may go unnoticed. Some people, however, experience itching or burning where the rash appears. The affected skin may take on a mottled, net-like pattern that can become permanent if exposure continues.
Mild cases may resolve on their own once the heat source is removed, but chronic cases can be difficult or even impossible to treat.
Can Erythema Ab Igne Lead to Skin Cancer?
While uncommon, chronic erythema ab igne can, over time, lead to the development of skin cancers such as squamous cell carcinoma. These cancers may appear decades after the initial rash develops. This makes prevention and early recognition incredibly important.
How to Prevent Erythema Ab Igne
You can reduce your risk of developing this condition and potential long-term damage by following these guidelines:
- Avoid prolonged exposure to intense heat sources like heating pads, space heaters, or electric blankets.
- Use heating pads for no more than 15 minutes at a time.
- Always place heating pads or electric blankets on top of a body part never underneath to prevent trapped heat buildup.
- If you notice a persistent rash or discoloration on your skin, schedule an appointment with a board-certified dermatologist.
Key Takeaway
While cozy heat sources can make winter more comfortable, prolonged or repeated heat exposure can cause lasting skin damage. Be mindful of how long you’re using heating devices, and give your skin time to cool off between uses.
If you notice a persistent rash, discoloration, or any skin changes, it’s best to have it evaluated by a dermatologist to rule out erythema ab igne or other skin conditions.