Eczema

The gut and skin are closely connected through what is often called the gut-skin axis. The gut plays an important role in training and regulating the immune system, and imbalances in the gut microbiome may contribute to inflammation and immune dysfunction. Studies have found differences in the gut bacteria of people with eczema compared to those without the condition.

Eczema is not generally considered an autoimmune condition. Instead, it is an immune-mediated condition where the immune system becomes overly reactive to things that would normally be harmless. This overactive immune response contributes to inflammation, itching, and skin barrier dysfunction. Although the immune system plays a major role, eczema is different from autoimmune diseases where the body attacks its own tissues.

Hormones can influence inflammation, immune function, and the skin barrier, all of which affect eczema symptoms. Many people notice flare-ups during puberty, pregnancy, menopause, or certain phases of the menstrual cycle. Research suggests that changes in estrogen and progesterone levels may affect skin hydration, barrier function, and inflammatory responses. For some individuals, hormonal fluctuations can be a significant trigger for worsening symptoms.

The best eczema products are usually simple, gentle, and focused on protecting the skin barrier. Look for fragrance-free moisturizers, creams, ointments, and cleansers designed for sensitive skin. Products containing ceramides can be particularly helpful because they support the skin's natural protective barrier. In general, the goal is to keep the skin hydrated and avoid ingredients that increase irritation.

Itching is one of the most common symptoms of eczema, but the severity can vary from person to person. Some people experience mild irritation, while others struggle with intense itching that interferes with sleep and daily life. Research suggests that itching in eczema is driven by both inflammation and changes in the nerves within the skin. For many people, the itch can be just as challenging as the visible rash itself.

Research suggests that certain probiotic strains, especially Akkermansia, may help improve eczema symptoms in some individuals, particularly when gut health and immune regulation are contributing factors. Probiotics may help support a healthier gut microbiome and reduce inflammatory signaling. However, results are mixed, and not all probiotics have the same effects. They are best viewed as one potential tool rather than a universal solution.

Many people notice that eczema symptoms become worse in the evening. At night, the body's natural anti-inflammatory hormone cortisol tends to be lower, which may allow itching and inflammation to become more noticeable. Skin also loses more moisture while sleeping, and there are fewer distractions to take attention away from itching. Together, these factors can make nighttime one of the most challenging parts of living with eczema.

Histamine is a chemical released by immune cells that can contribute to itching, redness, and inflammation. In some people with eczema, histamine may play a role in triggering or worsening symptoms, especially itching. However, eczema is driven by many inflammatory pathways, so histamine is only one piece of a much larger picture. This is why antihistamines may help some people but are rarely enough to fully control eczema on their own.

Food triggers vary significantly from person to person, and there is no single eczema diet that works for everyone. Common triggers may include gluten, dairy, eggs, wheat, soy, nuts, or highly processed foods in susceptible individuals. Rather than eliminating large numbers of foods unnecessarily, it is often more helpful to identify personal patterns and triggers with a structured approach or food sensitivity testing.