Erythema ab igne (EAI) aka Toasted Skin Syndrome

Does this look familiar to anyone?

Heat is very helpful when relieving pain, some say they take less painkillers when using it, but heat can be dangerous.


One tip we have with the YuYu is:

You can roll the YuYu around and not keep it just on one spot when too hot.



Erythema ab igne

aka Toasted Skin Syndrome

aka Hot Water Bottle Rash

Erythema ab igne is a skin condition caused by prolonged heat exposure.

Erythema ab igne is typically benign and can be resolved with discontinued heat exposure.

Mild cases can take weeks to months to resolve, whereas severe cases may take years to resolve or may remain permanently.


Untreated Erythema ab igne can result in secondary cutaneous malignancy.

So, if you have Erythema ab igne, it’s important to reduce heat exposure.

When I first started to see photos of this skin condition around Instagram, I assumed that it was a symptom of endometriosis.

People tend to present this skin condition as a symptom of endometriosis, but it’s not.

You can get Erythema ab igne from a hot lap top on your legs, heating pads, hot shower water, heating blankets, hot water bottles, etc.

If you have Erythema ab igne, please do your best to reduce heat exposure to your skin!

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