Dermatologist issues cancer warning over painful skin condition caused by electric blankets and hot water bottles

Hot water bottle
-Credit:Getty Images/Tetra images RF


A dermatologist has issued a warning over a little known skin condition that can be caused by prolonged exposure to heat such as electric blankets, hot water bottles, or even a laptop. With energy bills set to rise, many people are avoiding turning on their heating and instead using methods such as electric blankets to stay warm, as they can cost just pennies to run.

However, users of these warming products are being warned over a condition called Erythema ab igne (EAI), which is sometimes called toasted skin syndrome or hot water bottle rash. The condition has also been linked to heat sources such as heated car seats and laptops being placed directly onto laps.

Dr. Anil Sharma, a dermatologist at Sharma Skin & Hair Surgery explained the causes of toasted skin syndrome and the symptoms to look out for: "It is a skin condition caused by prolonged exposure to low-grade heat sources that are not intense enough to burn but sufficient enough to alter the skin’s structure. The rash has reddish-brown discolouration of the skin and often looks like a mottled pattern. Some people might also feel itching or a burning sensation in the affected area.

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“Exposure to heat in the range of 43–47°C can cause small but significant changes in the skin. Even though this temperature isn’t hot enough to burn you, it still harms the tiny elastic fibres that keep your skin flexible and the small blood vessels near the surface.”

While the rash may seem harmless, with repeated exposure, the effect on skin is similar to that of the sun or a tanning bed. Over time, this can cause permanent damage and even raise the risk of some types of skin cancer.

Dr. Anil advised that treatment is usually simple: “In many cases, simply removing the source of heat is enough to allow the skin to recover. Over time, the discoloration often fades, and any irritation typically resolves”.

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He advised that people who are frequently exposed to heat sources should protect their skin. For example, hot water bottle users can wrap their bottle in a blanket, and laptop users can use a tray or similar item.

“In some cases people have been recommended over-the-counter products like hydrocortisone 1% cream or retinol products. But I would always recommend consulting with a dermatologist to identify the best treatment plan for your specific condition and body.” he added.

In rare cases, toasted skin syndrome has been linked to some types of skin cancer. Dr Anil advises that anyone who notices changes to their skin should get this checked by a doctor: "Even though cancer is an uncommon complication, it’s always wise to have any persistent skin discoloration or texture changes evaluated by a professional."