head lice
Introduction
Head introduction The head lice are small gray-winged insects. The females start spawning 1-2 days after mating, about 3-9 capsules per day, and 50-150 capsules in a lifetime. The egg is yellowish white and sticks to the hair. After 5-10 days, it hatches into a larva. After growing into a larva for several hours, it can suck blood. The larvae were peeled 3 times and turned into cockroaches. After two weeks, they could lay eggs and breed very fast. Head lice occur most often in children, especially girls, and may be prevalent in school, so they cannot be ignored. Route of infection: Infected by contact with the patient's head, comb, hairpin, hat, headscarf, etc. Follow the scorpion, wash your hair first, the scorpion is wet and can't move, the scorpion will come out to breathe, the scorpion will appear on the hair surface and hair tip and the temple, the effect is very good. basic knowledge The proportion of illness: 0.001%-0.003% Susceptible people: no specific population Mode of infection: contact spread Complications: bacterial infection
Cause
Head lice cause
(1) Causes of the disease
It is an itchy skin disease caused by mistletoe on the skin of the human body.
(two) pathogenesis
The reaction to biting varies from person to person. After repeated bites, it produces a sensitive reaction, itching, rash, and no reaction after repeated bites. Because the first bite does not produce a response, the pathogenesis is not yet fully understood and may be related to the response.
Prevention
Head lice prevention
1. Do not use other people's grooming equipment.
2, develop a good cleaning habits, often wash your hair, at least once a week.
3, do not have contact with people with head lice, to avoid infection.
4, active and effective treatment and prevention of pubic lice.
5, try to keep your hair dry, try not to lick or tie your hair after showering or washing your hair, so that your hair will dry quickly and avoid creating a warm and humid environment for the scorpion. Perhaps some people have poor personal hygiene and long braids are the reason.
Complication
Head lice complications Complications bacterial infection
The scalp will itch. Schoolchildren are involuntarily scratching the itch, and then the head skin is broken and the bacteria are infected, causing complications of lymphadenitis. Cheng Yu is also able to absorb human blood, which in turn can affect the learning and mental restlessness of school children.
Symptom
Head lice symptoms Common symptoms Severe scalp pruritus and bloody papules pustular erythema (clear boundary
Head lice are parasitic on the hair roots behind the ear. They are more common in women and children with poor hygiene. They are easy to find head lice and licking eggs in the hair. There are erythema at the bite, pimples, itching is severe, and the scalp is scratched after scratching. Traces and blood stasis, heavy pulp exudation, can make the hair stick together into a bundle and emit odor, easy to secondary infection and pustules or rickets, lymphadenitis or eczema-like changes, the head lice crawling on the scalp The licking eggs on the hair are attached to the hairline side.
Examine
Head lice inspection
Turn the hair from the back neck forward and reverse the direction of the hair. If there is a small white point, use a light flick. If it can't be played, pull out the white spot, press the nail, and there is moisture flowing out or hearing the sound.
Diagnosis
Head lice diagnosis
diagnosis
According to the clinical diagnosis, it is diagnosed by finding sputum or sputum eggs.
Differential diagnosis
It should be differentiated from pruritus, pruritus, acne nodules, etc., but it should be noted that sometimes these lesions can occur simultaneously with the pubic lice.
