Pityriasis Rosea is apparently a rather common skin rash, it can last up to 6 months and in some cases a year or more. While it can occur at any age it is seen more frequently on people between the ages of 10 to 35.
Although Pityriasis Rosea is considered to be harmless, it has been known to cause some serious problems with women who are pregnant.
While opinions vary, most experts do agree that they aren't sure exactly what causes Pityriasis Rosea. Unlike a variety of other skin rashes it's not considered to be an 'allergic' reaction, nor does it seem to be caused by a bacteria, virus or a fungus, and yet something has irritated the skin and a rash is produced none-the-less.
~ even Pityriasis Rosea ~
often first displays itself with a single round, or oval pink patch that is scaly in nature with an outline that has a 'raised border' called a "herald patch". At the onset of this rash it can often be confused with Ringworm
In the following days and weeks the oval patches begin to appear in batches that are salmon colored, approximately 2 cm to 10 cm in size, and typically cover the chest, back, arms, legs and on occasion will spread to the neck and (rarely) the face.
When the patches are seen on the back they are often described as having a 'Christmas tree', or a 'Fir tree' like appearance. Unlike most rashes Pityriasis Rosea reacts differently from person to person, i.e.; 25% of people have no 'itchy' feeling at all, 50% of the population describe the itch as mild, while the balance of the population (25%) have described the itch as very severe.
Pityriasis rosea / Wikipedia (also known as "Pityriasis rosea Gibert") and you can get the 'classic' definition here.
However, below are my personal experiences with this horrible rash.
Pityriasis Alba ~ Gone In Just 6 Days ~ Pictures From Start To
Pityriasis Alba is a fairly common skin rash that occurs with children and is usually seen as a dry fine-scaled, and pale patches, which can also display on the face.
This type of rash will usually resolve itself, which can take up to a year, especially if it is on your face, and usually only requires the use of moisturizer creams such as hydrocortisone.
This 'rash' is named for the fine and scaly appearance which is initially present in (Pityriasis) and the 'Pallor' of the patches you can see ('Alba' is Latin for white).