Urticaria is not contagious.

Written by Zhu Zhu

Dermatology

Updated on September 27, 2024

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Urticaria is a hypersensitive skin disease related to the immune system, often occurring in patients with allergic constitutions. Urticaria is not contagious, so there is no need to worry about that. The causes of urticaria are mainly related to food, food additives, viral or bacterial infections, medications, and environmental factors such as climate and pollen. Therefore, if urticaria occurs, it is crucial to promptly identify the allergen and actively avoid triggers to prevent its occurrence. If urticaria does occur, it is essential to seek medical advice promptly.

Other Voices

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Written by Liu Gang

Dermatology

52sec

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Characteristics of papular urticaria

Papular urticaria is a type of allergic reaction, generally associated with contact with irritants, or bites from mosquitoes and fleas. The likelihood of occurrence increases if small animals are kept at home. Typically, small red papules or red wheals appear on localized areas of the body or extensively, with a transparent blister on top. The itching is quite severe, and the blisters are prone to bursting when scratched. Once symptoms appear, it is crucial to treat them with proper medication, and care should be taken to prevent infection if the blisters are scratched open. To prevent recurrence, it is advisable not to keep small animals at home, to frequently disinfect clothes, sheets, and duvet covers by exposing them to sunlight to eliminate mites or fleas, and to maintain a standard diet and lifestyle habits.

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Written by Li Ya Ping

Dermatology Department

1min 9sec

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Can urticaria be contagious?

Urticaria is not contagious. Urticaria, also known as wheals or commonly referred to as hives, is caused by temporary increased vascular permeability in the skin and mucous membranes due to allergic factors, resulting in localized edema. Wheals generally subside quite quickly, typically within 24 hours. The causes of wheals, which are essentially urticaria, may include the food we eat, airborne inhalants, and skin contact with substances such as pollen, dust mites, mold mites, as well as animal dander, fur, etc. Additionally, some cases may be related to infections, and some people may have a lethal factor due to suspicious medications. Moreover, the occurrence of urticaria can also be related to other factors such as cold, heat, ultraviolet light, and mechanical stresses such as friction or pressure. Furthermore, other factors including psychological and endocrine factors can also lead to the occurrence of urticaria.

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Written by Zhu Zhu

Dermatology

37sec

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Urticaria should be seen in which department?

Once urticaria occurs, it is advised to promptly consult a dermatologist, as urticaria is a type of skin disease related to allergies and belongs to the field of dermatology. Urticaria causes many symptoms, such as wheals, erythema, and papules on the skin, accompanied by severe itching. Therefore, it is essential to treat the symptoms in a timely manner. First, identify the allergen and avoid further contact with it. Moreover, use some anti-allergy medications for treatment and generally enhance your own resistance.

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Written by Xie Ming Feng

Dermatology

1min 7sec

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What should not be eaten with hives?

Patients with urticaria have individual differences in their physical constitutions, and not everyone is allergic to the same foods. However, some foods have a higher likelihood of causing allergies, such as seafood, shrimp, crabs, silkworm pupae, beef, lamb, dog meat, various exotic birds and game, fruits like mango, pineapple, durian, and lemon, as well as various food additives. Additionally, spicy and stimulating foods and alcoholic beverages can aggravate allergic reactions and should be avoided as much as possible. Patients who frequently suffer from urticaria may consider undergoing allergen testing to identify which foods trigger allergic reactions. However, the allergen doses used in tests are very small and many factors can affect the results, hence the test outcomes may not fully reflect the actual situation within the patient's body. Moreover, the variety of foods tested is limited, and foods not tested could still potentially trigger urticaria in patients.

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Written by Quan Xiang Mei

Pediatrics

1min 5sec

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Do children with urticaria fear heat?

Children with urticaria do not typically fear heat, but when the temperature is particularly high, they may experience alternating hot and cold temperatures. For instance, excessive sweating due to high temperatures can potentially irritate the skin, which might lead to a worsening of urticaria. When dealing with urticaria, it is essential to adjust the child's clothing according to the temperature conditions to avoid excessive sweating caused by wearing too much. Also, the alternation of warm and cold temperatures after sweating or exposure to wind can potentially aggravate the urticaria or cause it to recur. In the event of urticaria, depending on whether the child experiences symptoms such as itching, timely medical treatment should be administered, such as antihistamines, vitamin C, and calcium, all of which are viable options. The medication should be adjusted under the guidance of a doctor based on the child's condition.