The etiology and symptoms of chickenpox is one of the most common eruptive infectious diseases in children.
It is caused by chickenpox virus. Fever, sore throat and general discomfort may occur at the onset of chickenpox. After a few hours to a day, skin rash, some do not appear above symptoms and direct rash. The rash first appeared on the scalp, face and trunk, and gradually spread to the limbs. At the beginning of the red papules, 1-2 days later into oval, mung bean sized blisters, blisters around the light red. The blister shrinks and crusts in 3-4 days, and the crusts fall off in 1-3 weeks.
Characteristics of chickenpox
Because rashes appear in batches after the onset of the disease, papules, herpes and crusts can be seen on the skin of the sick children, which is the characteristic of varicella. Some children with herpes can also occur in the oral cavity, throat, conjunctiva and vaginal mucosa, rupture after the formation of ulcers, the original skin disease in children, skin rash will be more extensive. Chickenpox scab cover is very shallow, generally do not leave scars. After the natural infection, generally can obtain lifelong immunity.
Chickenpox is a multiple and acute infectious disease in susceptible population. The disease can occur all year round, especially in winter and spring. It mainly occurs in susceptible people who have never been infected with the virus and therefore have no immunity to it. Preschool children aged 1-6 are the most common group. Infants under 1 year old are less likely to develop varicella because they have acquired varicella antibody in their mothers. The incidence of neonatal is also less, but pregnant women with chickenpox one week before delivery and delivery after chickenpox, neonatal chickenpox often occurs and the condition is more serious.
The route of infection is varicella. There are two main ways of transmission: first, respiratory tract infection. The virus exists in the herpes fluid, blood and oral secretion of patients with chickenpox. Cough and sneezing of children with chickenpox may lead to infection of susceptible children and adults. 2、 Contact infection, contact with varicella virus contaminated tableware, toys, bedding and towels will be infected, so varicella is often prevalent in nurseries, kindergartens and other children’s groups.