flesh coloured or pigmented, well-defined, very slightly raised, flat-topped lesions
the surface of a plane wart is smooth or very slightly roughened
plane warts may occur anywhere but especially occur on the hands, limbs and face
plane warts may be misdiagnosed, especially on the face, where they are liable to be treated with topical steroids, in which case they spread
they may exhibit the Koebner phenomenon - occur in lines corresponding to scratch or other such trauma
Management:
seek expert advice
do not respond well to topical preparations
in general, eventually disappear spontaneously and lesions on the limbs are often best ignored
facial lesions may be treated with topical freezing techniques such as liquid nitrogen (used by an experienced practitioner for a short exposure). Salicylic acid (cream) and curettage and light cautery are other options (1)
post-inflammatory pigmentation may occur in patients with pigmented skin and may take months to resolve
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