Lichen Planus 
Diagnosis
Lichen Planus can be diagnosed clinically by experienced eyes. Lesions on the
skin have typical look as described elsewhere on this pages, and their location
such as legs, back, mouth, scalp, genitals, nails, or elsewhere (more or less in
this order) is important for diagnosis.
Sometimes the Lichen Planus eruptions, especially in early states, may
resemble to some other diseases like
atopic dermatitis,
psoriasis, candidiasis (in mouth), Leukoplakia (mouth), apthous
ulcers (mouth).
In case of doubt, or to confirm the diagnosis, a biopsy would help. Biopsy is
more often indicated in cases of oral and scalp Lichen Planus. Also, Lichen
Planus of nails alone could resemble psoriatic nails and fungus infection of
nails.
(Click the photo to enlarge.)
