This Celiac.com FAQ on celiac disease will guide you to all of the basic information you will need to know about the disease, its diagnosis, testing methods, a gluten-free diet, etc.
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What are the major symptoms of celiac disease?
Celiac Disease Symptoms
What testing is available for celiac disease? - list blood tests, endo with biopsy, genetic test and enterolab (not diagnostic)
Celiac Disease Screening
Interpretation of Celiac Disease Blood Test Results
Can I be tested even though I am eating gluten free?
How long must gluten be taken for the serological tests to be meaningful?
The Gluten-Free Diet 101 - A Beginner's Guide to Going Gluten-Free
Is celiac inherited? Should my children be tested?
Ten Facts About Celiac Disease Genetic Testing
Is there a link between celiac and other autoimmune diseases?
Celiac Disease Research: Associated Diseases and Disorders
Is there a list of gluten foods to avoid?
Unsafe Gluten-Free Food List (Unsafe Ingredients)
Is there a list of gluten free foods?
Safe Gluten-Free Food List (Safe Ingredients)
Gluten-Free Alcoholic Beverages
Distilled Spirits (Grain Alcohols) and Vinegar: Are they Gluten-Free?
Where does gluten hide?
Additional Things to Beware of to Maintain a 100% Gluten-Free Diet
What if my doctor won't listen to me?
An Open Letter to Skeptical Health Care Practitioners
If memory serves, I think psoriasis can cause those ridges, and psoriasis can be a symptom or offshoot of Celiac. I've had psoriasis for years! and some ridges, but discovered by accident/divine intervention, that carpets caused my psoriasis.
My one misconception? I think it would be that I am just following some fad.
I work in a resort and get lots of people stating they need gluten free meals, so me being the 'expert', gets to read labels and make suggestions. Then these same people will eat the breaded chicken!
I also have my suggestions put aside because the cooks read the label, which doesn't list gluten or wheat, and decide this is safe for the gluten-free guests. They put the gluten-free bread in the regular toaster, use margerine, use regular salad dressings (ya know, the cheap bulk stuff), and etc.
So now, so I don't look like a fad follower, I state that I am gluten free because I am Celiac, and I have the DNA results to prove it! (23andme - wish I had that done 3 decades ago!)
Schar is a large international gluten free company. It is one of the first big all gluten-free companies. It is always possible to have a gluten mistake, but rather unlikely.
They say that they test every batch for gluten.