In which of the following conditions Parakeratosis most frequently occurs-
Actinic Keratoses
Seborrheic Keratoses
Molluscum contagiosum
Basal cell carcinoma
Parakeratosis refers to retention of nuclei in horny layer. In actinic keratosis there is multiple, erythematous , irregular, rough, macules or papules with dry adherent scales. Sometimes as cutaneous horn. Surrounding skin photodamaged. Ref Harrison20th edition pg 1236
Anatomy of skin