Insect Contact Dermatitis

The disease is usually caused by 2 types of insects, moths and cavity ants. The disease is caused by skin contact with the moth larvae 'skin directly or indirectly through clothing or by the wind blowing on the skin, in the hairs of butterflies have histamine-like skin irritants causing acute dermatitis.
For cavity ants are caused by a substance like Canthanidin found in the depths of the biliary, when tightening the ant cavity on the skin, this substance comes in direct contact with the skin and causes disease.
Insect-associated dermatitis usually flares up from June to September each year. The reason is that after the rice harvest or the rainy season floods the field, butterflies and ants have no shelter will fly into the house, bedroom, bathroom and especially at night, when lit electricity, butterflies will fly in

.
Moreover, in the summer, people often wear open clothes, exposed skin so it is easy to contact directly with allergens.
Many people often find the disease when they wake up in the morning or come home after coming home the next day.
Differentiate between shingles and insect-borne dermatitis
Shingles is a disease caused by the Varicella zoster virus that causes chickenpox in the past When chickenpox is gone, the virus remains localized in the lymph nodes waiting for favorable conditions to develop and cause shingles.




The disease usually presents with soreness before the blisters appear. Vesicles stand in clusters, numbering from a few to hundreds, and especially blisters usually only on the right or left side of the body.
Pain in the affected area is the most common manifestation. When people recover, there are some people who still have pain at the site of the blister.
Manifestations of insect contact dermatitis
Lesions are initially red macules, then edema. Patients feel burning, pain, itching uncomfortable. On the surface of lesions white-gray, concave in the middle, blisters, ulcers When superinfection, there is white latex.




The lesions have a shape that corresponds to the moth's hair contact. There may be from 1 to dozens of round, oval, map, patchy, sometimes small and long lesions like a scratch in a nail.

Dimensions vary from a few mm to 10 - 20 cm. The upper red macules may appear on the right or left skin area or are scattered on both sides of the body. Sometimes eye damage causes red eyes, edema, and painful discomfort.
The clinical manifestations of the contact dermatitis caused by cavity ants and moths are nearly the same but because of the more severe ant ants.
The illness usually develops quickly after being exposed to the allergen for a few hours to 1 or 2 days. With the above manifestations, many patients mistook for shingles and bought acyclovir on their own, but did not recover after coming to the dermatological clinic.




Treatment of insect contact dermatitis
When red, itchy, painful patches of skin appear on the skin, the patient should see and treat at a dermatological clinic.
The illness usually resolves after 5-7 days of outpatient treatment, without requiring hospitalization. Patients should not be treated to avoid making the condition worse, prolonging the treatment time due to improper use of the drug. Patients can treat themselves initially by bathing, cleaning the skin, changing other clothes.
At the medical facility, after an insect diagnosis, the physician will guide the treatment of lesions with topical medications: soothing skin, antiseptic, and corticosteroids.
If superinfection has pus, ulcer, apply color solutions like castellani, milian. In addition, it is advisable to combine antibiotics such as cephalexin, ampicillin ..



. Take antihistamines such as desloratadin, clarityne, telfast, cetirizin, ...
Prevention
To prevent disease, people should implement the following measures: After the harvest, the evening should be closed to prevent insects from flying in, do not turn clothes when exposing insects to crawl in, do not wear clothes with insects The germ sticks to, does not kill insects on the skin or on clothes..

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