What is pityriasis rosea?
Pityriasis rosea is a mild, but common, skin condition. Characterized by scaly, pink,
inflamed skin, the condition can last from 1 to 3 months and usually leaves no lasting
What causes pityriasis rosea?
The cause of pityriasis rosea is not known, but it is commonly believed to be caused
by a virus or bacteria. Some patients may have a cold before the rash. It is usually
seen in children, adolescents, and young adults. Most people with the rash are 10
to 35 years of age.
The condition is more prevalent in spring and fall.
What are the symptoms of pityriasis rosea?
Pityriasis rosea usually starts with a pink or tan oval area (sometimes called a herald
or mother patch) on the chest, stomach, or back. The main patch is usually followed
(after a couple of weeks) by smaller pink or tan scaly marks elsewhere on the body—usually
the back, neck, arms, and legs.
The following are other common symptoms of pityriasis rosea. However, each individual
may experience symptoms differently. Symptoms may include:
The symptoms of pityriasis rosea may resemble other skin conditions. Always talk with
your healthcare provider for a diagnosis.
How is pityriasis rosea diagnosed?
Pityriasis rosea is usually diagnosed based on a medical history and physical exam.
The rash of pityriasis rosea is unique, and the diagnosis is usually made on the basis
of a physical exam. Occasionally, your healthcare provider may perform a skin scraping
or skin biopsy to confirm the diagnosis. In addition, your healthcare provider may
order the following tests to help aid in the diagnosis:
Treatment for pityriasis rosea
Specific treatment for pityriasis rosea will be discussed with you by your healthcare
provider based on:
Your age, overall health, and medical history
Extent of the rash
Your tolerance for specific medicines, procedures, or therapies
Expectations for the course of the rash
Your opinion or preference
The goal of treatment for pityriasis rosea is to relieve symptoms associated with
the condition, such as itching. Treatment may include:
Medicated lotions and creams (to soothe the itching)
Medicines by mouth (to ease the itching)
Cool baths with or without oatmeal (to soothe the itching)
Ultraviolet exposure (under a healthcare provider's supervision)
Cool compresses (to soothe the affected skin)
There is no cure for pityriasis rosea. The condition will usually resolve on its own
in about 1 to 3 months. Normally, it does not return.