tions of Scalp Biopsies in 44 Patients. Iran Red Crescent Med J.2012;14(8):501-2.

LPP is one of the main causes of primary cicatricial alopecias. This study was performed for review of histo-pathological characteristics of LPP, and for the first time the density of hair follicles in vertical scalp biopsies was compared with healthy scalp biopsies. Vertically sec-tioned scalp 5mm punch biopsies of 44 cases of LPP were examined(H&E and Alcian blue) according to NAHRS cri-teria (1). Also we reviewed 22 age and sex matched scalp biopsies of autopsies for obtaining criteria for normal follicle number. We found normal values of hair follicles (15.24 ± 3.06), sebaceous glands (9.62 ± 2.29) and arrec-tor pili muscles number (9.05 ± 2.55) in a 5 mm punch biopsy. Based on normal ranges, intensity of reduction in terminal hair was as follows: mild (9-12), moderate (5-8) and marked (1-4 follicles)