Does darling have varicella before symptom?

summary

Varicella is a primary infectious disease of acute respiratory tract, which occurs mostly in children and is caused by varicella zoster virus. The clinical symptoms of skin, mucosa and the whole body appear in batches, the rapid development of papules, macules. If people scratch because of itching, they will scar. Does darling have varicella before symptom? Let's talk about it.

Does darling have varicella before symptom?

The source of infection of varicella is varicella patients. The infectivity of varicella exists from one or two days before varicella to dry scab of skin rash. Direct contact with people who have already suffered from chickenpox or through droplets is the main route of transmission. The indirect transmission between healthy people can also be carried out in a short time. Generally, people who have not suffered from varicella are susceptible to infection, but children (preschool) have the highest incidence.

The incidence of chickenpox is less in infants within six months, and the mother's antibody can be obtained directly. However, the fetus in pregnancy after six months is vulnerable to infection and chickenpox. After the disease can obtain lasting immunity, but herpes zoster can also occur. Chickenpox can occur all year round, mostly in spring and winter. Almost all susceptible people who come into contact with patients will get sick. Due to the strong infectivity of chickenpox, collective institutions such as kindergartens and primary schools are easy to cause epidemic, which needs special attention. Infants often do not have prodromal symptoms, about 14 to 16 days of incubation period. However, the elderly or adults will have fever, headache, general discomfort, anorexia and upper respiratory tract symptoms. The eruption time is one to two days later, and occasionally prodromal rash will appear. The rash period after one or two days is accompanied by fever.

The rash symptoms developed rapidly, starting with erythema, then papules a few hours later, and finally herpes, which first appeared on the trunk and head, and then extended to the whole body. When there is herpes, people's skin will itch, and then dry into a scab, this process is only six to eight hours, if there is no infection, then one to two weeks after the scab off, generally do not leave scars. The skin rash is about 3-5mm in size, often oval in shape, surrounded by a red halo, and the herpes surface is shallow and easy to break. At first, the blister fluid is transparent and turbid, and the secondary infection is purulent. The time of scab formation becomes longer and scar will be left. The skin rash was most common in the trunk and distributed centripetally, followed by the head, face and proximal extremities. The number of herpes varies from several to thousands.

matters needing attention

The infection source of chickenpox is usually the people who have already suffered from it. If people have direct contact with it or have passed the droplet, the possibility of infection is great. When already suffering from chickenpox, the body has the corresponding antibodies, people will not suffer a second time.