Picture of Lichen Striatus on Arm
Lichen striatus. A common rash that appears in children as flesh, tan or pink-colored smooth or scaly flat topped bumps that usually form a line or band on the skin. They usually appear on the arms and legs, but can also appear on the face, neck or body. The cause is not known but they sometimes appear after a viral infection, a vaccination or trauma. There is no real treatment, and the rash should go away on its own, but it may take several weeks to months to resolve.
Text Source: American Osteopathic College of Dermatology UpToDate