I. Overview
1.Also known as urticarial moss, it is a common papular skin disease of children and adolescents.
2, often several children in the same family at the same time.
3, the people often called “insect sting dermatitis”.
II. Etiology and pathogenesis
(A) Etiology
1, internal causes: allergic constitution.
2, external causes: a, some insects, such as bedbugs, fleas, mosquitoes, mites and other bites caused by allergic reactions.
b, arthropod bite skin after the injection of saliva caused by people with allergic qualities and the onset of disease.
c, may intestinal parasites, consumption of certain foods related.
(B) Pathogenesis
The disease is a delayed allergic reaction, sensitization takes about 10 days, then the bite will prompt the rash, repeated bites can produce desensitization.
III. Clinical manifestations
1, the age of onset: most often in children, adolescents, and in recent years, adults also often occur.
2, lesion sites: mostly on the trunk, extensor side of the extremities.
3, lesion characteristics: a, a single lesion is a red papule, often with a central papule, blisters or blisters. b.
Some of the rashes are hard, milky papules, which are swollen after scratching.
The lesions are scattered and do not fuse. Scratching can lead to secondary infection.
4.Self-perceived symptoms: severe itching.
5.Course of disease: the rash fades in about 1-2 weeks, leaving pigmented spots after fading.
IV. Treatment
(I) Systemic treatment
1. Antihistamines (omitted).
2. Glucocorticoids. Used for more extensive skin lesions and more severe reactions.
3. Chinese medicine (omitted).
(II) Topical medication
1. Furnaceolite rub.
2.Chinese ointment.
3.Glucocorticoid ointment.
4.Chinese herbal medicine bath, used for skin lesion generalization.
V. Prevention and precautions
1.Pay attention to personal hygiene and environmental hygiene.
2.Avoid going to places with many insects, dust and pollen.
3. Avoid contact with animals, such as dogs and cats.
4.Avoid eating suspicious food, and eat things that must be fresh and washed well.
5, do not apply things indiscriminately after the onset, such as flower lotion, safflower oil, etc., which often cause allergy aggravation, and if necessary, you can
Ice compress.
6. After the onset of the disease, it is best to go to a regular hospital and use medicine under the guidance of a dermatologist. Those who are not serious and cannot go to the hospital in time
The face can be tried hydrocortisone butyrate ointment (commonly used in China) or dextran ointment (commonly used abroad) or mometasone furoate ointment (i.e. Erosone ointment), other parts can be tried Wuji cream, etc.
7, avoid scratching, otherwise easy to infect.
The weather is slowly heating up, it is the season of insects easily, but also the season of papular urticaria is high, but I hope this article can bring you some help.