The epidermal turn over time is: (A) 14 days, (B) 28 days, (C) 40 days, (D) None of the above
Answer is B. Epidermal turn over time or skin doubling time includes:- Transit time from basal layer to stratum corneum = 14 days; transit through the stratum corneum/desquamation = 14 days (total = 28 days from basal layer to desquamation. Ref:- Review of Dermatology by Alikhan; pg num:-2