Lichen striatus is a rare, benign, self-limited linear dermatosis of unknown origin that predominantly affects children. Lichen striatus is clinically diagnosed on the basis of its appearance and characteristic developmental pattern following the lines of Blaschko.
No racial predilection is recognized for lichen striatus.
No consensus exists on sex predilection in lichen striatus. Some studies show a 2- to 3-fold increased incidence in girls compared with boys, whereas others show an equal sex distribution.
Lichen striatus is primarily a disease of young children. More than 50% of all lichen striatus cases occur in children aged 5-15 years. Other reports dispute this age range and claim that the median age of onset for lichen striatus is 3 years. Although lichen striatus is rare in both infants and adults, the disease can occur in persons of any age. [3, 4]
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