Three Day Fever Rash: What You Should Know About It

Three day fever rash is a sensitive disease which may cause vita impact on children health. This disease bears some symptoms and can be cured according to the proper treatment.

Especially at a young age, toddlers are often infected with diseases such as measles, rubella, chickenpox, scarlet fever or the like. These are very well-known diseases that affect children’s health, especially in the first few years of life. For most diseases, immunity is established once you have become infected with it.

The three-day fever is also one of the diseases that usually occur in small children between six months and two years of age. Many parents are not sure what to do to make their little bundle of joy feel better. In this post we explain what is behind the rash and the most important things you should consider and clarify frequently asked questions.

the essentials in brief

  • The three-day fever is caused by a herpes virus. Young children are most often infected between the ages of six and 36 months.
  • The rash is typical of a herpes virus and occurs after the high fever has subsided. The small red spots that usually spread over the chest, stomach and back also look worse than they are.
  • The incubation period is five to 15 days. After about two weeks, the virus is over and the toddler is no longer contagious. This means that there is lifelong immunity even after the illness.

Three-day fever rash: what you should know

Three-day fever is a disease that is most common in young children. 90 to 100 percent of the population have already been infected with this virus and are considered immune. Since this disease usually occurs between six months and three years, 95 percent are considered immune after the age of two.

What are the causes of the rash after the three days of fever?

The three-day fever (Exanthema subitum) is caused by a herpes virus. The responsible herpes group is usually the human herpes virus type 6; it is only rarely caused by the human herpes virus type 7. The three-day fever is accompanied by a sudden, high fever and after three to four days it disappears quickly.

The high fever rarely lasts longer than three to four days. After the fever has passed, the typical rash for a herpes virus appears. The rash is the normal course of three-day fever.

What does the three-day fever rash look like?

The appearance of the rash can be terrifying, but it is harmless and usually does not cause any symptoms. An itchy or painful rash is usually not associated with it. The rash is evidenced by small pale pink to red spots. The red spots spread over the back, stomach and chest

It spreads quickly and the small spots can unite and grow larger. Most of these spots are flat, but can also appear as small bumps. The finely spotted, often light-colored rash can also form white rings around the spots. This rash is often confused with measles or rubella, but these diseases have other side effects and also last longer.

Where and for how long does the rash appear?

The rash often spreads from the neck to the chest, abdomen, and back. It is not uncommon for the arms or legs to be affected. However, it rarely develops on the face or scalp. The rash usually only goes away in a few hours or in two to four days.

Cute little newborn baby boy with mom

How long is the three-day fever rash contagious?

The three-day fever caused by the herpes virus is highly contagious. The infection occurs through a droplet infection and can be transmitted through coughing, sneezing and speaking. The incubation period, i.e. the time between infection and illness, is five to 15 days.

After two weeks at the latest, everything should be over and the risk of infection is over. After the body has become infected with the virus, one is immune to it for life. A renewed infection can only occur in extreme cases.


As mentioned in this article, three-day fever is a common condition in young children. The rash appears after the fever subsides. It is often confused with other typical childhood diseases such as measles. However, the course of measles is a lot longer.

Despite the high fever and dangerous looking rash, this herpes virus is more harmless than it seems. The rash develops within a few hours and can subside in the same short time. After four days at the latest, the rash has completely disappeared and the toddler is free of symptoms. After recovery, the toddler is immune for life.

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