Can patients with urticaria eat shiitake mushrooms and wood ear mushrooms?

In general, if patients with urticaria are not allergic to shiitake mushrooms or wood ear mushrooms, they can consume these foods. However, if patients have a known allergy to shiitake mushrooms or wood ear mushrooms, consumption is not recommended.

If patients have previously consumed shiitake mushrooms or wood ear mushrooms without experiencing allergic reactions, or if allergy testing has confirmed no allergy to these mushrooms, then moderate consumption during an episode of urticaria may be acceptable. Shiitake mushrooms contain various nutrients, such as lentinan, multiple vitamins, and minerals, while wood ear mushrooms contain iron, dietary fiber, and various vitamins. Moderate consumption may help supplement nutrition, enhance immune function, and potentially aid in recovery.

If patients are confirmed through testing to be allergic to either shiitake mushrooms or wood ear mushrooms, or have a history of allergic reactions after consuming these foods—such as worsening skin itching, increased hives, gastrointestinal symptoms like nausea, vomiting, and abdominal pain, or even severe allergic reactions such as difficulty breathing—they should strictly avoid these foods during an episode of urticaria to prevent exacerbation of allergic reactions and worsening of the condition.

Patients with urticaria should pay special attention to their diet, making every effort to avoid known allergenic foods. They should also maintain a bland diet, avoiding spicy, irritating foods and seafood, which are common allergens, to facilitate recovery. If there is any doubt regarding the safety of a particular food, patients are advised to consult a physician or dietitian for professional guidance.