[Lichen striatus with nail abnormality is a self-limiting condition]

Area of Science:

• Dermatology
• Pediatric Dermatology

Background:

• Lichen striatus is an uncommon inflammatory dermatosis.
• It typically affects children and presents with characteristic linear lesions.

Observation:

• A six-year-old boy presented with an asymptomatic linear rash on his left arm.
• The rash consisted of erythematous papules coalescing into a linear band.
• Nail involvement of a left-hand fingernail was also noted.

Findings:

• Clinical diagnosis of lichen striatus was established.
• The condition is known for spontaneous remission.
• Nail involvement is associated with a prolonged disease course.

Implications:

• Lichen striatus is a benign condition.
• Biopsy is generally not required for diagnosis.
• Understanding the prolonged course with nail involvement is important for patient management.