What Are the Symptoms of Lice?

Adults and nymphs of lice suck blood on their hosts for life. Hosts are: terrestrial mammals, a few are marine mammals, and humans are often parasitic. Lice is not only harmful to the blood, but also makes the host very itchy, and can infect many important human and animal diseases.

The lice that parasite in the human body are:

When it comes to "lice" parasites, everyone probably feels disgusted. However, it is precisely through the study of two kinds of lice that parasitize on the human body that American scientists have speculated that the ancestors of today's humans, "moderns" and human apes, "erect humans" may have had "close contact" during the evolution process.

United States

There are about 13 species of lice that are parasitic to domestic animals, which belong to Hae-matopinidae and Linognathidae. The most common species are Haematopinas, mainly parasitic on

The life expectancy of lice is about six weeks. Each female lice lays about ten eggs per day. The lice eggs can be firmly adhered to the hair or clothing of humans and animals. It can hatch into a larva in about a day, and immediately bites and sucks blood. It passes three times after about two or three weeks.

Lice to be with

New Anglo-American scientist view: tiny lice cause dinosaur grumpy

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When lice bite the human body, the secreted saliva enters the skin of the human body and makes the skin itchy. Scratching and scratching with your hands can damage the skin, which leads to secondary infections and the formation of abscesses. Lice can also transmit many diseases when it sucks blood, body lice and head lice are considered to be transmitted

(1) Itching: Itching is the main symptom, but the degree of itching varies from person to person. Itching is due to

British girl with creepy hair and creepy lice

According to a report by the British "Daily Mail" on October 16, 2014, recently, a mother in Britain had to use a mule to comb dense head lice from her daughter's hair every day, which was creepy. The girl's head lice has been going on for months.

Dr Alejandra Perotti, of the University of Reading's School of Biological Sciences, said the head lice are quite common in the UK and Europe, and most often occur in children, the elderly or homeless people. But such a serious condition is really rare.

It is reported that the formation of head lice is as follows: At first, female lice lay eggs at the root of the hair, and the temperature of the scalp promotes the hatching of lice eggs, thereby growing more lice. They slowly grow to the size of sesame seeds by sucking blood from the scalp. As the number of lice increases, they stick to the hair, making it difficult to manage the hair.

Some experts have suggested that the best way to deal with head lice is to comb your wet hair with a fine duster. However, Perotti believes that hair washing is not ideal. It is best to cut off the hair so that the young lice will leave the hair completely. ^[2]