# Red rash called erythema ab igne on my leg -associated with peripherial neuropathy

**URL:** <https://forum.livingwithpolyneuropathy.org/t/red-rash-called-erythema-ab-igne-on-my-leg-associated-with-peripherial-neuropathy/789>\
**Category:** Symptoms - CIDP\
**Created:** [November 4, 2014, 4:43pm UTC](https://forum.livingwithpolyneuropathy.org/t/red-rash-called-erythema-ab-igne-on-my-leg-associated-with-peripherial-neuropathy/789 "2014-11-04T16:43:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![chirpybirdy](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.livingwithpolyneuropathy.org/chirpybirdy/32/26_2.png) [@chirpybirdy](https://forum.livingwithpolyneuropathy.org/u/chirpybirdy)\
**Post date:** [November 4, 2014, 4:43pm UTC](https://forum.livingwithpolyneuropathy.org/t/red-rash-called-erythema-ab-igne-on-my-leg-associated-with-peripherial-neuropathy/789/1 "2014-11-04T16:43:46Z")

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I had a heating pad on my thigh because I have some pain. It was only on there for about 1 hour. When I went to the bathroom I noticed this weird, red, lacy appearing rash on my thigh where the heating pad was. It doesn’t hurt or anything. I did some searching on the web and found it is called erythema ab igne. It can be associated with heat on your skin and is also associated with peripherial neuropathy. I have CIPD. Has anyone else ever experienced this rash? Should I be concerned? I removed the heat pad but the rash is still there and not fading. this has never happened to me and I have had CIDP for just over 3 years. At first I was thinking shingles but it doesn’t appear to look that way. Then a picture came up on my search that looks exactly like what I have and it is called erythema ab igne.

[30-LegRashIMAGE.jpg](https://us1.discourse-cdn.com/flex019/uploads/ben_polyn/original/2X/1/1d9323e49854a1e12337386c481dcad3b34db8c4.jpg) (6.11 KB)

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**Author:** ![Madere\_dancermom](https://avatars.discourse-cdn.com/v4/letter/m/a5b964/32.png) [@Madere\_dancermom](https://forum.livingwithpolyneuropathy.org/u/Madere_dancermom)\
**Post date:** [November 10, 2014, 6:42pm UTC](https://forum.livingwithpolyneuropathy.org/t/red-rash-called-erythema-ab-igne-on-my-leg-associated-with-peripherial-neuropathy/789/2 "2014-11-10T18:42:04Z")

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Chirpy, rashes are notoriously hard to diagnose because rashes from twelve different causes can be exactly the same in appearance. But since you used the heating pad, you have a clear explanation for why the rash occurred, and the name of the rash you mention means "redness from heat" or fire. I am pretty certain your rash will fade over the next few days, but if it doesn't, you can call your doctor.

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**Author:** ![chirpybirdy](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.livingwithpolyneuropathy.org/chirpybirdy/32/26_2.png) [@chirpybirdy](https://forum.livingwithpolyneuropathy.org/u/chirpybirdy)\
**Post date:** [November 10, 2014, 6:43pm UTC](https://forum.livingwithpolyneuropathy.org/t/red-rash-called-erythema-ab-igne-on-my-leg-associated-with-peripherial-neuropathy/789/3 "2014-11-10T18:43:30Z")

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Thank you. the rash did fade away after 24 hours. I am glad. I don't want one more complicated thing to deal with attached to this darn CIDP.