Lichen Planus

I.          Definition:
 
Lichen planus is rash that can be very itchy and stubborn.  It usually involves the wrists, ankles, genitals and mouth but can affect any part of the body.  It occurs with equal frequency in both sexes and amongst all races.
 
 
II.          Causes:
 
·           The cause is unknown.
 
·           Lichen planus is not dangerous or contagious (does not spread from person to person).
 
·           If you look at lichen planus under a microscope, one can see immune cells attacking the skin cells.  The immune cells normally attack germs.  No one knows why the immune cells attack skin cells in people with lichen planus.
 
 
 
III.          Treatment:
 
·           There is no specific treatment for lichen planus.  Cortisone creams and ointments are sometimes helpful.
 
·           Antihistamines help the itching.
 
·           In most people the rash disappears in one to two years.