BOF: 2.68
A 53-year-old male presents
with an itchy rash on the anterior aspect of his wrists. On examination you
note several purplish, flat -topped papules. There are papules that have
arisen in areas of trauma and you also note fine, white, lacy lines on the
lesions. Oral involvement is also seen.
In this patient which one of
the following is characteristic of this condition?
a)
Purple colour
b)
Papules arising in areas of trauma
c)
Oral involvement
d)
Flat topped papules
e)
Fine white lacy lines on the lesion
Answer: e)
The clinical features
described suggest the patient has Lichen planus. The fine white lacy lines on
the lesions (these are known as Wickham's striae) are characteristic of this
condition
Lesions arising over areas
of trauma (Koebner’s phenomenon) may occur in other conditions such as
psoriasis, lichen nitidus and vitiligo.
Oral involvement is common
in this condition and is induced by trauma to the mucosa overlying the bite
margin
