text: <unk>  is a premalignant condition of thick, scaly, or crusty patches of skin. It is  most common in fair-skinned people who are frequently exposed to the sun, because their pigment isn't very protective. It usually is accompanied by solar damage. Since some of these pre-cancers progress to squamous cell carcinoma, they should be treated.
option_0: Actinic keratosis
option_1: Inverted follicular keratosis
option_2: Nevus comedonicus
option_3: Lichen nitidus
option_4: Eccrine nevus
option_5: Porokeratosis
option_6: Actinic granuloma
option_7: White sponge nevus