Eczema or dermatitis herpetiformis

[ellieb13]

Hi,

I've feel like I've hit a brick wall. I've had eczema as a child and have mostly grown out of it, with an occasional flare-up (once a year at most). However, this time around none of the usual tactics work. I use a soap substitute, use 100% cotton clothing, even changed my mattress. The topical steroid given by the doctor usually does the trick after a few days but everytime i stop, it returns quickly. This doesn't feel like eczema to me as it is on my back, buttocks, neck and elbow whereas all my other flare-ups have mainly been on the backs of my knees and inside of elbow. My Grandmother is being tested for celiac disease in the coming days due to her "eczema" not responding fo treatment also. There are some celiac in the family but not close (grandfather's sister). Is this a possibility? I'd love to hear your thoughts and experiences.

I would like to add that it's incredibly hard to get a GP appointment at the moment too so would the online home testing kits be a reliable testing option, or just a quick buck scheme?

 

Many thanks 😊 

[trents]

Welcome to the forum, @ellieb13!

The third party commercial celiac test kits are reliable but suffer from the same shortcomings that the average physician ordered celiac testing does. Namely, the number and kinds of tests included is pretty limited, usually just one or two antibody tests as opposed to a complete panel. Some who do have celiac disease have immune systems that respond atypically to the usual tTG-IGA testing that most docs order and so are missed. If IGG antibody tests would have also been ordered they might have been detected. 

I could be wrong but I think there is also the issue that sometimes those with dermatitis herpetiformis do not have enteric involvement and do not produce serum IGA antibodies of the kind the tests are looking for. These people can only be diagnosed by skin biopsy during a dermatitis herpetiformis outbreak. Perhaps another forum member with more knowledge in this area can check my thinking here.

Don't misunderstand me, I'm not trying to discourage you from opting for the commercial third party do it yourself kit. If you can afford it, go for it! I'm just trying to help you understand the limitations of such testing, particularly in your situation.

Edited December 8, 2024 by trents

[Scott Adams]

If you get tested for celiac disease be sure that you are eating lots of gluten daily in the 6-8 weeks before the test, otherwise you could get false positive results.

Here is more info about how to do a gluten challenge for a celiac disease blood panel, or for an endoscopy:

Quote

"...in order to properly diagnose celiac disease based on serology and duodenal histology, doctors need patients to be on gluten-containing diets, even if they are causing symptoms, and this is called a "gluten challenge."

• Eat gluten prior to celiac disease blood tests: The amount and length of time can vary, but is somewhere between 2 slices of wheat bread daily for 6-8 weeks and 1/2 slice of wheat bread or 1 wheat cracker for 12 weeks 12 weeks;
• Eat gluten prior to the endoscopic biopsy procedure: 2 slices of wheat bread daily for at least 2 weeks;

and this recent study recommends 4-6 slices of wheat bread per day:

 

If you have DH you will likely also want to avoid iodine, which is common in seafoods and dairy products, as it can exacerbate symptoms in some people. This article may also be helpful as it offers various ways to relieve the itch:

 

[dublin555]

I’ve been through something similar recently, and I know how frustrating it can be when nothing seems to work. Based on what you’ve described, it might be worth considering dermatitis herpetiformis, especially with the family history of celiac disease. Testing could give you some answers, and while online kits aren’t as reliable as a GP, they’re a good start if appointments are hard to get.

I also found relief through medical cannabis for my eczema, at Releaf, a clinic in the UK that offers eczema medical cannabis treatment. They start with a low dose, adjust weekly, and track progress through online consultations.