What Is Erythema Infectiosum?

Infectious erythema is also called No. 5 disease, because it is the fifth eruptive disease after measles, Germany. The disease is common in school-aged children. It is caused by B19 parvovirus infection. It is transmitted through the respiratory tract. The patient inhales the virus-laden air and particles and becomes sick.

Infectious erythema

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Infectious erythema is also called No. 5 disease, because it is the fifth eruptive disease after measles, Germany. The disease is common in school-aged children. It is caused by B19 parvovirus infection. It is transmitted through the respiratory tract. The patient inhales the virus-laden air and particles and becomes sick.

Chinese name

Infectious erythema

Aka

No. 5 disease, buccal cheek disease, professional rash

Incubation period

4 to 18 days

Treatment

Oral antihistamine chlorpheniramine

Infectious erythema (also known as No. 5 disease, buccal cheek disease, professional rash, and paw disease)

The incubation period is 4 to 18 days.

Due to the frequent contact and long time between students, the disease is very easy to spread in school.

Symptom No. 5 begins without many symptoms, but there are symptoms of low fever and heat resistance 3 to 4 days after onset. A few days later, a reddish spotted rash appeared on both cheeks, and his face looked like he was being slapped. The skin around the mouth is unaffected.

One to three days after the red spots on both cheeks, pink spots appear on the upper arms and thighs, accompanied by itching, and often spread to the trunk and buttocks. After the rash subsides, the rash appears banded or reticulated It lasts about 5 to 10 days.

If a patient does intense exercise or sunbathing to congest the skin, it usually causes the rash to reappear after a few weeks or months.

Young people with this disease usually don't have a rash, but they have mild joint pain or swelling (arthritis), and even affect the hands, knees and wrist joints. Discomfort can last from a few days to eight months without leaving permanent damage.

complication:

Normal children are usually not infected with complications, but patients with cell leukemia or cancer under treatment may develop severe anemia (low red blood cell disease), and these patients usually do not develop rash.

Pregnant women infected with the virus can cause anemia in unborn children.

treatment:

Most children with infectious erythema do not need treatment. If they have fever or joint pain, paracetamol or Ibuprofen can be used. Oral antihistamines (chlorpheniramine) can be used to relieve itching.

There is no need to restrict the diet of the sick child during the illness.

Contagious:

During the period of infection, from 3 days to 2 weeks before the rash (or joint pain), most of the sick children feel good or have some discomfort but can still play with other children, so the possibility of preventing infection is very low.

related question:

Children who develop a new rash will not be infected with the virus.

Doctors should be told to pregnant women who come into contact with a child 3 days before to 2 weeks after the onset of rash.

Blood immunity tests can detect whether a patient has been infected with the disease.

Most adults are infected with parvovirus during childhood and will not be infected again.