Pityriasis rosea is a common skin rash that occurs mainly in children and young adults. The scaly, reddish-pink rash first appears on the back, stomach, or chest. The rash can then spread to the neck, arms, and legs. Pityriasis rosea usually occurs in the spring and fall.
This condition may last for several weeks. Although the lesions usually go away on their own after 2 to 3 months, you should contact your doctor if you experience any of the symptoms below.