Symptom >> Dermatology >> Dermatology

Roseola

Introduction
Cause
Examine
Diagnosis

Introduction

Introduction Roseola is a bright red rounded rash with a diameter of 2-3 mm. It is formed by the expansion of blood vessels around the lesion. The pressure fades. When it is released, it reappears and appears on the chest and abdomen. A rash, also known as a child's acute rash, is an acute benign rose-like rash in infants and young children, characterized by a hot rash. The vast majority are caused by human herpesvirus 6 (HHV26) infection. This disease occurs mostly in infants under 2 years of age, with very few older children, and smaller infants less than 6 months old. The virus enters the body through the respiratory tract and begins to have a fever after a period of incubation. The onset is very fierce, and the child suddenly has a high fever of 39 to 40. Individual children have convulsions due to high fever at the beginning of the disease. They usually take only one time. The time is short. After the convulsion, they are still as usual. Check the white blood cells are not high, the scorpion is a bit red, often in the back of the ear or behind the occipital bone can touch the big lymph nodes of the soybeans, the child has not retired fever, taking medicine, injection is invalid, and then burned to 3 to 4 days suddenly fever, There is a pink maculopapular rash in the whole body, and there are fewer or no rashes in front of the limbs and rashes. Symptoms such as anorexia, nausea, vomiting, and diarrhea that accompany the fever gradually disappear with the rash, and the rash falls back after 1 to 2 days. No traces, no peeling, this is the characteristics of children with acute rash.

Cause

Cause

This is an acute respiratory infection caused by a viral infection, but it is not as infectious as rubella or measles. Although it can occur all year round, it mainly occurs in dry and cold winter and spring, and most of the children are 6~18. The baby of the month, especially within the age of 1 year, is transmitted by droplets.

The onset characteristics of rose rash

Infected with the virus does not immediately appear uncomfortable, because the immersed virus will have an incubation period of 8 to 14 days. After the incubation period, the biggest feature is that there is no obvious symptom but a sudden high fever, and the trend is very fast, rising to 39~40 degrees within a few hours. However, the baby may only show mild discomfort, and there is no major change in appetite, play and sleep, and the heat continues. Usually, after 3 to 4 days of fever, the heat suddenly drops, and after hot retreat and shortly after retreat, pink spots or rash appear on the skin, so that the torso is more, usually only one day, the rash is out, and Retreat in 1~2 days, no desquamation, no pigmentation.

Examine

an examination

Related inspection

rash

The doctor examined the throat and found only mild redness, and the number of white blood cells in the blood test decreased, but lymphocytes accounted for the majority.

The incubation period is 7 to 14 days with an average of 10 days. The clinical feature is sudden onset, high fever at the beginning of the disease, body temperature of 39 ~ 40, continued for 3 to 5 days and sudden drop, hot rash after the rash. During the fever, the appetite spirit is still good, the pharyngeal isthmus is congested, and occasionally the former halogen bulging, there may be febrile seizures. After 9 to 12 hours of heat rash, the skin lesions were red spotted or maculopapular, mainly scattered in the trunk, neck and upper limbs. There were 3~5mm gaps between the rashes, and occasionally a halo was visible around the rash. The endothelial rash begins to subside in a few hours, usually disappears within 2 to 3 days, without pigmentation and scaling. In a few cases, there is no rash in a few cases. On the first day of onset, the white blood cell count increased, and neutrophils predominate. After the second day, the number of white blood cells decreased significantly, and the lymphocytes increased relatively, reaching 90%.

Diagnosis

Differential diagnosis

Treatment and care of rose rash

Because it is not yet effective against viral infections, symptomatic treatment and supportive therapy can be used for the treatment of rose rash, as follows:

1. When taking a high fever, follow the doctor's advice and take the antipyretic in time. It is best to rest in bed.

2. Drink warm water, eat more fresh fruits, diet should be light and easy to digest, if it is a weaned baby, give liquid or semi-liquid food as well.

3. You can take some vitamin C and vitamin B tablets, but you need to follow the amount given by your doctor.

4. Do not rub the rash with a large alkaline soap.