Morus caterpillar dermatitis

Introduction to mulberry caterpillar dermatitis Eucatissimilisdermatitis refers to the skin inflammation caused by the poisoning of mulberry caterpillar larvae. The mulberry caterpillar is also known as the mulberry moth, also known as the thorn caterpillar. The mulberry caterpillar has numerous venomous hairs, and the center of the poisonous hair is a hollow pipe. There is a venom in the toxic liquid. After the venomous hair falls off, it flutters in the wind and can be infected after contact with the human body. basic knowledge The proportion of illness: 1% Susceptible people: no special people Mode of infection: contact spread Complications: conjunctivitis keratitis

The cause of mulberry dermatitis

(1) Causes of the disease

There are numerous venomous hairs in the mulberry body. The center of the venom is a hollow tube with venom in it. After the venom is shed, it flutters in the wind and can be infected after contact with the human body.

(two) pathogenesis

The venomous hair is arrow-shaped, hollow, and communicates with the venom gland. It contains kinins, esterases and other peptide substances. After the venom is in contact with the skin, it penetrates the skin mainly through the hair follicles, but also through smooth skin and mucous membranes. Cause the rash does not have to penetrate the skin, as long as the head end is in close contact with the skin, the toxic hair toxicity can be maintained for two years, is the primary stimulating effect of the venom containing venom on the skin, not the toxic hair Mechanical action.

Mulberry dermatitis prevention

Take various measures to eliminate mulberry caterpillars, such as trapping wintering larvae and moths, spraying mulberry nucleopolyhedrovirus (which can kill more than 90% of mulberry caterpillars and not harming silkworms), and protect the natural enemies of caterpillars (parasitic cockroaches, parasitic flies) Wait).

Personal protection is mainly to prevent exposure to poisonous hair. When working in the summer season of mulberry caterpillars, try to wear protective clothing caps, or wear thick long-sleeved clothes, trousers, and tight cuffs, goggles, and do not have mulberry caterpillars. Under the tree, take a cool or dry clothes, be smashed, and when there are mulberry caterpillars nearby, in case of strong winds, close the doors and windows, put down the mosquito nets, and prevent the intrusion of poisonous hair.

Mulberry dermatitis complication Complications Conjunctivitis keratitis

After the poisonous hair penetrates into the eye, it causes conjunctivitis and keratitis.

Symptoms of mulberry worm skin common symptoms herpes simple itch rash stagnation group rash keratitis

After the poisonous burr hurts the human skin, the local sensation is severely itchy in about several minutes to more than ten hours, and then the edematous reddish rash from the needle to the soybean is developed. After a few hours, it develops into a maculopapular rash or a herpes. The group, which is the most common spotted rash, is mostly scattered, the size is as large as mung bean to soybean, round or irregular, reddish or bright red, edema is significant, and there is often a black or dark red needle in the center. Hedgehog points, a few can also be about the size of soybeans, edematous red papules, the center of which has a large blister of needles, after scratching or rubbing to form a smashed surface, dry and crusted, desquamation, there are also yellow beans to nails Those who vary in size.

Occurs in areas that are susceptible to poisonous hair attack, such as the neck, neck, upper chest, shoulders and upper limb flexion forearms and other exposed parts, but also affect other parts of the body, but less.

After poisonous burr into the eye, causing conjunctivitis, keratitis, etc., the toxicity of toxic hair can be maintained for 2 years. Therefore, drinking water containing poisonous hair or inhaling venom can cause oral or upper respiratory tract infection, and the patient feels itchy, especially Before going to sleep at night.

The course of the disease is usually about 1 week, and it can be self-healing. It can also be up to 2 weeks. If the poisonous hair continues to stimulate or scratch, the course of the disease often lasts for 2 to 3 weeks.

Examination of mulberry dermatitis

The rash is detected by a stereoscopic microscope, or the viscous adhesive paper is repeatedly viscous, and the toxic hair can be detected from the lesion, and the toxic hair can be detected from the patient's nail scale.

Diagnosis and identification of mulberry dermatitis

According to the epidemic season, the location of the disease, clinical manifestations, self-conscious symptoms, combined with laboratory tests is not difficult to diagnose.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.