Diagnosis
“Typically presents with a single herald patch that is oval-shaped and scaly with central clearing, followed by a symmetric rash on the trunk in a typical distribution along the Langer lines.”
Chrismas tree pattern because of the rash distribution along Langer lines.
Treatment
The rash may last up to 12 weeks and no treatment is required.
Further Reading
Am Fam Physician 2015;92(3):211-216. Common skin rashes in children.