Acanthosis nigricans can occur due to -: (A) Increased multiplication of basal cells, (B) Cornification of basal cells, (C) Keratinisation of epidermal cells, (D) All
Answer is C. Hyperplasia of stratum spinosum of the epidermis.
Hyperkeratosis → Thickening of Stratum corneum of epidermis (Cornification of epidermis).
Slight basal cell hyperpigmentation.