Erythema infectiosum or fifth disease is one of several possible manifestations of infection by erythrovirus, previously called parvovirus B19. The disease is also referred to as slapped cheek syndrome, slapcheek, slap face or slapped face. In Japan the disease is called "apple sickness" or ringo-byou (りんご病）in reference to the symptom of facial redness. In Hungary it is called "butterfly pox" as the red cheeks look like the wings of a butterfly.
Fifth disease starts with a low-grade fever, headache, and cold-like symptoms, such as a runny or stuffy nose. These symptoms pass, then a few days later the rash appears. The bright red rash most commonly appears in the face, particularly the cheeks. This is a defining symptom of the infection in children (hence the name "slapped cheek disease"). Occasionally the rash will extend over the bridge of the nose or around the mouth. In addition to red cheeks, children often develop a red, lacy rash on the rest of the body, with the upper arms, torso, and legs being the most common locations. The rash typically lasts a couple of days and may itch; some cases have been known to last for several weeks. Patients are usually no longer infectious once the rash has appeared.
Teenagers and adults may present with a self-limited arthritis. It manifests in painful swelling of the joints that feels similar to arthritis. Older children and adults with fifth disease may have difficulty in walking and in bending joints such as wrists, knees, ankles, fingers, and shoulders.
- In pregnant women, infection in the first trimester has been linked to hydrops fetalis, causing spontaneous miscarriage.
- In people with sickle-cell disease or other forms of chronic hemolytic anemia such as hereditary spherocytosis, infection can precipitate an aplastic crisis.
- It should also be noted that those who are immuno-compromised (HIV/AIDS, Chemotherapy) may be at risk for complications if exposed.
Fifth disease is transmitted primarily by respiratory secretions (saliva, mucus, etc.) but can also be spread by contact with infected blood. The incubation period (the time between the initial infection and the onset of symptoms) is usually between 4 and 21 days. Individuals with fifth disease are most infectious before the onset of symptoms. Typically, school children, day-care workers, teachers and mothers are most likely to be exposed to the virus. When symptoms are evident, there is little risk of transmission; therefore, symptomatic individuals need not be isolated.
Any age may be affected although it is most common in children aged five to fifteen years. By the time adulthood is reached about half the population will have become immune following infection at some time in their past. Outbreaks can arise especially in nursery schools, preschools, and elementary schools.
The name "fifth disease" is not typically capitalized, since the name derives from its historical classification as the fifth of the classical childhood skin rashes or exanthems. Their classification is as follows:
It was first described by Robert Willan in 1799 as "Rubeola, sine catarrho". It was better defined by Anton Tschamer in 1889 as a rubella variant ("Ortliche Rotheln"), identified as a distinct condition in 1896 by T. Escherich, and given the name "erythema infectiosum" in 1899.
Treatment is supportive as the infection is frequently self-limiting. Anti-pyrogens (i.e., fever reducers) are commonly used. The rash is painless and non-pruritic (not itchy), requiring no specific therapy.
Affects one in three adults
Affecting about 35 percent of all adults in the United States according to the CDC, metabolic syndrome contributes to weight gain, by causing a state of internal starvation called metabolic starvation. This in turn leads to increases hunger, sugar cravings and increased portions leading to overeating and weight gain.
Cause and effect misunderstood
Since we traditionally thought that the portion control (which in turn was attributed wrongly to poor will power)is the cause of weight gain, rather than the effect of this metabolic starvation, all our traditional ideas about cause and effect of obesity were not only wrong but lead to the “blame the victim” attitude when it comes to obesity.
Secret of weight gain revealed
Secret of weight gain, and metabolic syndrome revealed - it has been recently proven that metabolic syndrome, and the weight gain itself are caused by a process called insulin resistance. Check your metabolic syndrome risk using the free Metabolic syndrome meter. Watch this amazing Ted Med video that reveals the secret of weight loss - Stop blaming the victim for obesity
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