What is lichen striatus?

Lichen striatus is a rare rash appearing as pink bumps that group together to form a linear band on the arms or legs.

What causes lichen striatus?

The cause is unknown, but it is thought to occur in the embryonic development.

Who is at risk for lichen striatus?

More than half the cases occur in kids 5 to 15 years of age. It is more common in women and rare in adults.

What are the signs/symptoms of lichen striatus?

Lichen striatus appears as a streak or line of scaly red, pink, puffy, tan small bumps. Occasionally, there can be lines on both sides of the body or multiple parallel lines. It is most commonly found on the extremities and is rare on the trunk, head, or neck region. The band may be a few centimeters in length or can span the entire arm or leg. Typically, there are no symptoms, but the band may be itchy.

How is lichen striatus diagnosed?

This is a clinical diagnosis; however, biopsy may sometimes be helpful.

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