1. < Skin Health

Grid/Net shaped rash

Posted by karenamara @karenamara, Sep 19, 2020

My boyfriend gets these net-shaped patches on his back once in a while, according to his mom it's been happening since he was a teen. What is it? It doesn't hurt or itch. He takes a medication called Modecate.

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Moderator
Amanda Roe | @amandajro | May 9, 2021
In reply to @nickkynl "I am from canada and had the same type of pattern. I was also recovering from..." + (show)
@nickkynl

I am from canada and had the same type of pattern. I was also recovering from bronchitis when I woke up to the pattern on my back and it got darker through out the day, then it went away for a week before coming back but was very light the second time. No patterns that would match that anywhere, I looked at where I have been laying. This was like 6 or 7 weeks ago

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Hello @nickkynl and welcome to Mayo Clinic Connect. Thank you for joining the conversation to share that you also have experience with what other members like @rush and @karenamara have shared.

It sounds like you have traced your steps back through your physical environment to see if anything could've caused this pattern to appear. I wonder if you've thought anymore about any other changes that could coincide with the rash appearing?

Do you have any symptoms as a result of the rash or just the pattern?

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1 reply
nickkynl | @nickkynl | May 9, 2021
In reply to @amandajro "Hello @nickkynl and welcome to Mayo Clinic Connect. Thank you for joining the conversation to share..." + (show)
@amandajro

Hello @nickkynl and welcome to Mayo Clinic Connect. Thank you for joining the conversation to share that you also have experience with what other members like @rush and @karenamara have shared.

It sounds like you have traced your steps back through your physical environment to see if anything could've caused this pattern to appear. I wonder if you've thought anymore about any other changes that could coincide with the rash appearing?

Do you have any symptoms as a result of the rash or just the pattern?

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I had no other symptoms but that area was numb, it was also not raised or indented. I was seen by a doctor and they had no idea what it was either, it did not make sense to then

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dontmentionit | @dontmentionit | May 23, 2021

I'm here because I just found this same type of rash on my back. My boyfriend says it was there yesterday, too, but I don't know when it started. I'm 32, female, no history of eczema. I've had weird rash patterns before but not like this.

I do have a chair with a diamond back pattern, so it could be that, but I don't understand how that could have done it unless I had my bare skin against it. The rash is in the middle of my back, always covered by a shirt.

Also, if it was the chair, why are the red spots showing up only in the negative space of the grid? The center of the diamond, not the grid part, is red. You'd think it would be the other way around if it was a reaction. And I sit in those chairs often and have never seen this before. I don't even think the grid has the same dimensions as the one on the chair.

I can't believe there isn't more information on this, since other people have experienced it too. I haven't yet seen a convincing possible diagnosis from a medical professional. I wonder if it's an autoimmune type thing.
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3 replies
Moderator
Amanda Roe | @amandajro | May 25, 2021
In reply to @dontmentionit "I'm here because I just found this same type of rash on my back. My boyfriend..." + (show)
@dontmentionit

I'm here because I just found this same type of rash on my back. My boyfriend says it was there yesterday, too, but I don't know when it started. I'm 32, female, no history of eczema. I've had weird rash patterns before but not like this.

I do have a chair with a diamond back pattern, so it could be that, but I don't understand how that could have done it unless I had my bare skin against it. The rash is in the middle of my back, always covered by a shirt.

Also, if it was the chair, why are the red spots showing up only in the negative space of the grid? The center of the diamond, not the grid part, is red. You'd think it would be the other way around if it was a reaction. And I sit in those chairs often and have never seen this before. I don't even think the grid has the same dimensions as the one on the chair.

I can't believe there isn't more information on this, since other people have experienced it too. I haven't yet seen a convincing possible diagnosis from a medical professional. I wonder if it's an autoimmune type thing.

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Hello @dontmentionit and welcome to Mayo Clinic Connect. This rash is certainly a mystery to not only you but other members as well. @gardenjunkie mentioned Puss Caterpillar but I haven't seen anyone else come back with more information on that. Have you ever heard of this?

REPLY
rush | @rush | Jun 6, 2021
In reply to @dontmentionit "I'm here because I just found this same type of rash on my back. My boyfriend..." + (show)
@dontmentionit

I'm here because I just found this same type of rash on my back. My boyfriend says it was there yesterday, too, but I don't know when it started. I'm 32, female, no history of eczema. I've had weird rash patterns before but not like this.

I do have a chair with a diamond back pattern, so it could be that, but I don't understand how that could have done it unless I had my bare skin against it. The rash is in the middle of my back, always covered by a shirt.

Also, if it was the chair, why are the red spots showing up only in the negative space of the grid? The center of the diamond, not the grid part, is red. You'd think it would be the other way around if it was a reaction. And I sit in those chairs often and have never seen this before. I don't even think the grid has the same dimensions as the one on the chair.

I can't believe there isn't more information on this, since other people have experienced it too. I haven't yet seen a convincing possible diagnosis from a medical professional. I wonder if it's an autoimmune type thing.

Jump to this post

The cause of the grid pattern remains unsolved, despite there having been a reasonably extensive investigation into possible causes, see the RGMP Dossier at https://payhip.com/b/jnIc
RGMP presents like an allergy test and commonly appears on the middle to upper left hand side of the spine.

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paulinaelizabeth | @paulinaelizabeth | Jun 20, 2021

Same thing happened to me for the first time. I am going to dermatologist this week. I will let you know what he says. Does not itch or hurts

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1 reply
Moderator
Amanda Roe | @amandajro | Jun 20, 2021
In reply to @paulinaelizabeth "Same thing happened to me for the first time. I am going to dermatologist this week...." + (show)
@paulinaelizabeth

Same thing happened to me for the first time. I am going to dermatologist this week. I will let you know what he says. Does not itch or hurts

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Hello @paulinaelizabeth and welcome to Mayo Clinic Connect. Thank you for joining this discussion on the heels of also seeing a dermatologist. It will be most interesting to hear what you find out. Will you please come back and share?

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gardeningjunkie | @gardeningjunkie | Jun 21, 2021

There is abundant information about this rash with it's distinctive pattern on the internet. Lots and lots of photos from all over the world. Bone up on all you read to be more informed when this is discussed with your dermatologist.

REPLY
hitmant | @hitmant | Jun 21, 2021
In reply to @dontmentionit "I'm here because I just found this same type of rash on my back. My boyfriend..." + (show)
@dontmentionit

I'm here because I just found this same type of rash on my back. My boyfriend says it was there yesterday, too, but I don't know when it started. I'm 32, female, no history of eczema. I've had weird rash patterns before but not like this.

I do have a chair with a diamond back pattern, so it could be that, but I don't understand how that could have done it unless I had my bare skin against it. The rash is in the middle of my back, always covered by a shirt.

Also, if it was the chair, why are the red spots showing up only in the negative space of the grid? The center of the diamond, not the grid part, is red. You'd think it would be the other way around if it was a reaction. And I sit in those chairs often and have never seen this before. I don't even think the grid has the same dimensions as the one on the chair.

I can't believe there isn't more information on this, since other people have experienced it too. I haven't yet seen a convincing possible diagnosis from a medical professional. I wonder if it's an autoimmune type thing.

Jump to this post

I have the same thing that happens June 10th at 440 am 2020 and 2021 same time 1 year apart help me figure out what is going on please

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