For the millions of Hong Kong residents struggling with eczema’s relentless itch, seasonal weather changes often signal an inevitable flare-up. As humidity rises and temperatures dip, many patients find themselves unsure whether their diet is helping or harming their skin. To provide clarity, a local Traditional Chinese Medicine practitioner and a leading dermatologist have weighed in on the condition’s root causes and the specific foods that can soothe—or aggravate—inflamed skin. Their insights form a comprehensive guide for anyone seeking relief through the kitchen.
Two Medical Lenses, One Skin Problem
TCM practitioner Xu Sufang explains that eczema is a manifestation of internal disharmony. She points to genetics, environmental triggers, poor diet, emotional stress, and sleep deprivation as key contributors. In TCM theory, damp and humid weather directly worsens the body’s internal moisture imbalance, which is why many Hongkongers notice severe symptoms during spring.
Dermatologist Dr. Lo King-hun offers a microscopic perspective. He describes eczema as a dual problem: a fragile skin barrier combined with an overactive immune system. “When the stratum corneum is weak, allergens like dust mites and pollutants get in, and the immune system overreacts, causing inflammation,” he explains. He also highlights the crucial role of the gut microbiome, noting that babies born via C-section—who miss exposure to maternal lactobacillus—or those who were not breastfed face a significantly higher risk of developing the condition.
The Red Light: Foods That Worsen Eczema
Ms. Xu advises patients to eliminate what she calls “stimulating” foods. Her list includes spicy dishes, shellfish such as shrimp and crab, and common allergens like peanuts and milk. She also cautions against beef, lamb, goose, durian, and pineapple, which she believes can aggravate skin eruptions in sensitive individuals.
Dr. Lo takes a gut-centric approach. He warns against processed items like sausages, ham, and instant noodles, as well as high-sugar cakes and deep-fried meats. “Greasy foods create the perfect breeding ground for bad gut bacteria,” he explains. “When the gut microbiome is unbalanced, the immune system becomes dysregulated, which directly triggers eczema flares.”
The Green Light: Foods That Promote Healing
To reduce inflammation, Ms. Xu recommends cooling, detoxifying ingredients. She encourages patients to incorporate mung beans, winter melon, cucumber, adzuki beans, and job’s tears into their daily meals. She also offers a classic recipe for a Spleen-Strengthening and Dampness-Reducing Soup, combining herbs like poria, Chinese yam, and red dates to harmonize the body’s internal environment.
Dr. Lo focuses on probiotics and gut restoration. He champions foods like yogurt, legumes, and high-fiber fruits and vegetables. “A healthy gut trains the immune system to be less reactive,” he says. “This directly translates to less severe skin inflammation over time.”
Myth-Busting: Egg Yolk Oil and Beef
Two pervasive myths in Hong Kong’s eczema community are confronted head-on. The first involves egg yolk oil. Dr. Lo explains that what is commonly marketed as egg yolk oil is actually tar. While medical-grade tar has been used for centuries to calm itching, the high concentrations found in homemade preparations pose a serious risk. “High-concentration tar can irritate the skin or even increase the cancer risk,” he warns. He advises patients to rely on regulated pharmacy products like pine tar soap or simple barrier creams such as coconut oil and petroleum jelly.
The second myth involves beef. Many patients automatically cut it from their diet, but Dr. Lo cites a study from Prince of Wales Hospital showing that beef protein has the lowest allergenic potential among common meats. The real problem, he says, is often spoiled meat, which undergoes protein changes, or beef preserved with sulfur dioxide to maintain its red color. The reaction is to the additive or the spoilage, not the meat itself. “Do not blindly remove food groups,” he urges. “Find your specific triggers through proper testing.”
The Takeaway
The consensus among Hong Kong’s medical experts is clear: eczema management requires a holistic strategy that moves beyond surface treatments. While topical care remains essential, dietary choices offer a powerful lever for long-term relief. Patients are advised to avoid drastic elimination diets, work with their doctors to identify true triggers, and embrace whole foods that support gut health. By rejecting unverified folk remedies and focusing on informed eating, residents can turn the tide on the pervasive “dampness” that fuels the condition, finally moving from a cycle of reaction to a state of lasting control.