The PR can occur in any age but is more common in people between 10-35 years old. It can last from a few weeks up to 6-8 months. It’s treated without leaving scars.

What are the symptoms?

The disease often begins with a large pink plate, typically in the chest or back. It is usually scaly and is called "mother" plate. Many times tricks with its appearance and we pass it for mycosis.

Within one or two weeks, will appear and others pink plates on the trunk and in a smaller extent in the hands, feet and neck. In neck rarely appear. These are smaller than the first plate. In the back can get a layout like the branches of a fir tree. Sometimes the rash may be more serious. Often the patients are terrified because of the extent that gets the rash. Itching is usually short, but may deteriorate with sweat.

Physical activity, such as running may temporarily worsen the rash. The disease can continue with remissions and exacerbations for a few months.


The cause is unknown. However, isn’t caused by a fungus or microbe or allergic reactions or any sign of internal disease.

There is a theory that claims that the cause is a virus, based on the fact that usually occurs only once and the patient may feel unwell. This theory is unproven so far, but it seems that is gaining ground. The disease, however, is not contagious.

How is it diagnosed?

It is usually made easily by a dermatologist. Rarely may be needed skin biopsy to confirm the diagnosis.

What is the treatment?

It focuses on treatment of the itching if it exists and recommended lukewarm baths, moisturizing emulsions, etc. The intense exercise if it worsens the rash should be avoided.

Sometimes needed the taking of corticosteroids and is an effective treatment, capable to stop the natural route of the disease.