Wickham's striae are seen in:
Lichen planus is a self limiting condition in which flat topped violaceous papules are seen on the flexor aspect of the body. Wickham's striae are white streaks seen on the lesions especially when viewed with magnifying lens. Ref: Illustrated Synopsis of Dermatology and STD's By Neena Khanna, Page 55
Lichen nitidus
Lichenoid eruption
Lichen striatus
Lichen planus