What is lentigo simplex? Lentigo simplex is the most common form
of lentigo. A single lesion or multiple lesions (lentigines) may
be present at birth or more commonly first develop in early
childhood. Lentigo simplex is not induced by sun exposure, and
it is not associated with any medical diseases or conditions. It
is also referred to as simple lentigo and juvenile lentigo. What
are the clinical features of lentigo simplex? Lentigo simplex
lesions may occur anywhere on the skin or mucous membranes. Only
a few lesions may develop initially, but over time up until
adult life they may become more numerous. Rarely, lesions may
erupt suddenly or occur in vast numbers. Lesions appear as: -
Round or oval shaped macule (flat spot or patch) 3-15mm in
diameter - Margin or edge of the macule can be jagged or smooth
- A single even colour ranging from light brown to black -
Lesions are symptomless, i.e.: not painful or itchy Lentigo
simplex lesions are distinguished from freckles by their darker
colour, comparative spar