Remits within 1 to 2 years
More persistent and resistant to therapy
Squamous cell carcinoma risk is unclear (highest risk with erythematous or erosive oral and genital<unk> 
Monitor for medication adverse effects
Lichen planus
The differential diagnosis for lichen planus includes:
Lichen sclerosus
Chronic graft-versus-host disease
Tinea corporis
Psoriasis
Vitiligo
Atopic dermatitis