Is acute urticaria contagious?

Written by Zhu Zhu

Dermatology

Updated on September 26, 2024

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Acute urticaria is not contagious. Clinically referred to as wheals, acute urticaria is an allergic reaction-related disease associated with the immune system. Its causes may be related to allergies, microbial infections, stimuli from extreme temperatures, psychogenetic factors, endocrine factors, etc. Acute urticaria is not infectious but is curable and can recur. After contracting acute urticaria, it is crucial to actively identify the triggering factors to timely prevent the recurrence of urticaria.

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Written by Zhang Shu Kun

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Where to apply moxibustion for acute urticaria

In cases of acute urticaria, it is advised to promptly visit a hospital and undergo treatment under the guidance of a doctor. This is because moxibustion is a slow treatment method and is not very effective for acute urticaria. However, if urticaria occurs in normal circumstances, it can be slowly treated through moxibustion, which can achieve therapeutic purposes. Moxibustion mainly plays a supplementary role. Initially, moxibustion can be applied to acupoints such as Quchi, Dazhui, and Sanyinjiao to maintain health and achieve effective conditioning.

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How to Distinguish Between Papular Urticaria and Urticaria

Papular urticaria, also known as insect bite dermatitis, is a different disease from urticaria. Urticaria, also known as wheals, is called yinzhen in traditional Chinese medicine, and it is a localized edema of the skin and mucous membranes due to temporary increased vascular permeability. For most patients with urticaria, the exact cause cannot be identified. Common causes include foods, such as animal proteins and certain food additives that induce urticaria. Urticaria can also be triggered by certain infections as allergens, as well as by certain medications such as penicillin, serum products, various vaccines, sulfonamides, etc. Additionally, common inhalants such as pollen, animal dander, dust, fungal spores, dust mites, and volatile chemicals can also trigger urticaria. Papular urticaria is characterized by a small blister in the center of a reddish area, often resulting from bites or stings of various insects like mosquitoes, mites, bees, etc., or from irritation by toxic sap on the skin. Improvement can be seen once removed from the allergenic environment.

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Symptoms of postpartum urticaria

Postpartum hives are mainly characterized by subjective itching symptoms on the skin. On the surface of the skin, you can see patches of varying sizes with a reddish color, some of which may also feel burning. Generally, this can occur within the first few hours and then quickly subside, but it is prone to recurrent outbreaks. Additionally, some patients may experience gastrointestinal reactions, such as nausea, vomiting, abdominal pain, diarrhea, and can even cause palpitations and difficulty breathing. When hives are detected, it is advisable to go to the hospital in a timely manner, and ask professional doctors to actively carry out examinations and treatments.

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Written by Zeng Hai Jiang

Pediatrics

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Do children with urticaria feel itchy?

Children's urticaria generally causes itching. It occurs when children come into contact with foods, medications, or other allergenic substances, leading to scattered or widespread red rashes. The rash may appear as wheals or might be maculopapular or urticarial in nature, generally accompanied by rashes and itching. If a child develops urticaria, topical medications can be applied, providing relief from itching and allergic reactions.

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Written by Liu Gang

Dermatology

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The difference between papular urticaria and urticaria

Papular urticaria is an allergic reaction caused by direct contact with irritants or insect bites such as mosquitoes. The cause of the disease is relatively accurate, and treatment typically involves disinfecting clothes, bed sheets, and duvet covers by exposing them to sunlight, avoiding contact with small animals, and common antiallergic medications can cure it quickly. The causes of common urticaria are more complex and often unclear; identifying the allergens usually requires allergy tests in hospitals, and the treatment is more complicated than that for papular urticaria. Common antiallergic drugs can cure it in the short term. However, some cases of urticaria that enter a chronic phase can be very troublesome to treat, with lengthy treatment times and poor outcomes.