Nearly Half of Celiac Skin Patients Report Neurological Problems, Study Finds

When my son was diagnosed with celiac disease, I knew about the gut damage and dietary restrictions. What I didn’t anticipate was learning how far-reaching gluten-related autoimmunity can be—extending beyond the intestines to affect the skin, thyroid, and nervous system.

A new study examined 114 patients with the skin form of celiac disease and found that nearly 44% reported neurological problems. This isn’t a fringe finding—it’s a significant proportion of patients dealing with headaches, nerve pain, and other nervous system issues alongside their skin symptoms.

What This Means for You

If you have celiac disease or the skin form of the condition, this research reveals that neurological symptoms like headaches, nerve pain, or tingling might not be unrelated issues—they could be connected to the same autoimmune process attacking your gut or skin.

The study found that over half of patients had specific antibodies that target the nervous system. This helps explain why so many people with gluten-related conditions report brain fog, headaches, or nerve problems that doctors sometimes dismiss as separate issues.

Most importantly, strict adherence to the gluten-free diet matters beyond just protecting your intestines or clearing your skin rash. When you consume gluten, your immune system may be attacking multiple systems in your body simultaneously—including your nervous system. This research shows why “mostly gluten-free” or occasional cheating can have consequences you can’t immediately see or feel.

If you experience persistent neurological symptoms, don’t hesitate to bring them up with your healthcare team. This study supports the need for comprehensive care that looks beyond just one organ system.

Key Takeaways

• Nearly half (44%) of patients with the skin form of celiac disease reported neurological problems like headaches and nerve pain
• Over half (53.5%) had antibodies that specifically target nervous system tissue, even more than had the classic celiac antibody
• One-third of patients weren’t following a strict gluten-free diet, which may contribute to ongoing immune system attacks on multiple body systems
• People with gluten-related conditions should monitor for neurological symptoms and discuss them with their doctors
• This reinforces that celiac disease isn’t just a gut or skin condition—it’s a whole-body autoimmune disorder

The Science

Want to understand how this actually works? We’ll walk you through the technical details below and define every term. No medical degree required.

What This Study Actually Found

The researchers, led by Tamás Malkovics and colleagues, analyzed clinical, serological (blood antibody tests), and neurological data from 114 DH (dermatitis herpetiformis—a skin condition caused by gluten autoimmunity, often called “celiac disease of the skin”) patients (70 males, 44 females, with a mean age of 50.2 years) between 2020 and 2023. The diagnosis was confirmed through direct immunofluorescence microscopy—a lab technique that uses fluorescent dyes to detect antibody deposits in skin samples, considered the gold standard for DH diagnosis.

Here are the numbers that matter:

• 43.9% of patients reported neurological comorbidities (co-occurring nervous system conditions), with headache and radiculopathy (nerve root pain or damage, often causing radiating pain, tingling, or numbness) being most common
• 53.5% tested positive for TG6 autoantibodies—antibodies against transglutaminase 6, a protein found in the brain and nervous system, serving as a marker specifically associated with neurological manifestations
• 24.6% had TG2 autoantibodies (antibodies against transglutaminase 2, the classic celiac disease marker found primarily in the gut)
• 24.6% had TG3 autoantibodies (antibodies against transglutaminase 3, associated with skin involvement in dermatitis herpetiformis)
• 19.3% had Hashimoto’s thyroiditis (an autoimmune condition where the immune system attacks the thyroid gland)
• 32.5% had anemia

Perhaps most concerning: only 65.8% of patients adhered to a strict gluten-free diet (complete elimination of all foods containing wheat, barley, rye, and cross-contaminated oats). More than a third followed an incomplete or no gluten-free diet at all.

Why TG6 Matters

The transglutaminase family is a group of enzymes (proteins that facilitate chemical reactions) that your immune system can mistakenly attack in autoimmune conditions. Here’s how they differ:

Celiac disease involves autoantibodies (immune proteins that mistakenly attack your own body) against transglutaminase 2 (TG2), which is found primarily in the gut. Dermatitis herpetiformis involves TG3, concentrated in the skin. And TG6? That’s found predominantly in the brain and nervous system.

The fact that over half of DH patients in this study had TG6 autoantibodies—even more than those with the classic celiac TG2 marker—suggests that neurological involvement in gluten-related disorders (conditions triggered by gluten consumption, including celiac disease, dermatitis herpetiformis, and gluten ataxia) may be more common than previously appreciated.

This aligns with research we’ve covered before. Earlier this year, we discussed a Mendelian randomization study examining genetic interactions between Alzheimer disease and celiac disease, which explored how these conditions might share underlying mechanisms. The current Budapest study adds another piece to this puzzle, demonstrating that gluten-related autoimmunity can target multiple organ systems simultaneously.

The Systemic Nature of Gluten-Related Disease

What strikes me about this research is how it reinforces something celiac families learn the hard way: this isn’t just a digestive condition. The autoimmune response (when the immune system mistakenly attacks the body’s own tissues) triggered by gluten can affect virtually any tissue in the body.

For my son, the intestinal symptoms were the obvious concern. But as a parent navigating this landscape, I’ve become acutely aware of the potential for complications that extend far beyond stomach pain and digestive distress. Thyroid problems, anemia, bone density issues, and yes—neurological symptoms—are all part of the broader picture.

The Budapest findings underscore this reality. Nearly one in five DH patients had Hashimoto’s thyroiditis, another autoimmune condition. A third had anemia (low red blood cell count, often caused by nutrient malabsorption in untreated celiac disease). And almost half reported neurological problems. These aren’t isolated conditions occurring by chance—they’re interconnected manifestations of systemic autoimmunity (an immune system response that affects multiple organs and tissues throughout the body).

The Diet Adherence Problem

One number from this study that I find particularly troubling: 34.2% of patients were not following a strict gluten-free diet.

I understand the challenges. The gluten-free diet is relentless. Every meal, every snack, every social gathering requires vigilance. For adults managing their own care—especially those whose primary symptom is a skin rash rather than immediate digestive distress—the temptation to relax dietary restrictions must be significant.

But this study shows why adherence matters. DH is often called “celiac of the skin,” and the treatment is the same: lifelong gluten elimination. The presence of TG6 autoantibodies in over half the cohort (study group of participants) suggests that ongoing gluten exposure may be contributing to neurological involvement that patients might not immediately connect to their diet.

This connects to broader patterns in celiac care. We previously covered research showing that celiac disease is tied to fatigue, poor health, and significant care gaps, with many patients struggling to maintain the dietary vigilance required for optimal outcomes. The DH population appears to face similar challenges.

The Bigger Picture

As a celiac parent, I find myself constantly learning about the far-reaching implications of this autoimmune condition. My son’s celiac disease diagnosis opened a door into a complex world where the immune system’s response to a single protein can cascade into effects across multiple organ systems.

This Budapest study, while focused on dermatitis herpetiformis (an itchy, blistering skin rash caused by gluten autoimmunity), has broader relevance for anyone affected by gluten-related autoimmunity. The high prevalence (how common something is in a population) of TG6 autoantibodies—and the corresponding neurological comorbidities—suggests that we need to think about celiac disease and its related conditions as systemic disorders, not just conditions affecting the gut or skin.

The researchers put it well: their findings “underscore the systemic nature of DH and its strong association with transglutaminase autoimmunity, neurological and autoimmune comorbidities, emphasizing the need for early diagnosis, strict adherence to a GFD (gluten-free diet), and a multidisciplinary approach to optimize patient outcomes.”

For celiac families, this is both sobering and validating. Sobering because it confirms the serious, multi-system nature of gluten-related autoimmunity. Validating because it reinforces that the vigilance required—the endless label reading, the careful meal planning, the difficult conversations at restaurants and social events—serves a purpose beyond preventing immediate symptoms.

The gluten-free diet isn’t just about avoiding digestive discomfort. It’s about protecting the entire body from an autoimmune response that, as this research demonstrates, can reach far beyond the intestines.

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Related Coverage

• Celiac Disease Tied to Fatigue, Poor Health, and Care Gaps - Medscape
• Mendelian randomization study of genetic interactions between Alzheimer disease and celiac disease

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References

Malkovics T, Csák Z, Sodbuyan E, Lambertus I, Kárpáti S, Sárdy M. Cross-sectional Study of Dermatitis Herpetiformis with Focus on Neurological Comorbidities. Acta Derm Venereol. 2026 May 11:106. doi: 10.2340/actadv.v106.adv-2025-0004. PMID: 42124505.