Hair dysplasias are congenital or acquired alterations which often involve the hair shaft. Hair shaft abnormalities are characterized by changes in color, density, length and structure. Hair shaft alterations often result from structural changes within the hair fibers and cuticles which may lead to brittle and uncombable hair. The hair of patients with hair shaft diseases feels dry and looks lu...

256 Ann Dermatol Received January 27, 2016, Accepted for publication May 9, 2016 Corresponding author: Il-Hwan Kim, Department of Dermatology, Korea University Ansan Hospital, 123 Jeokgeum-ro, Danwon-gu, Ansan 15355, Korea. Tel: 82-31-412-5186, Fax: 82-31-412-4208, E-mail: kumcihk@korea. ac.kr This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Com...

BACKGROUND Woolly Hair is an uncommon congenital anomaly of the scalp hair presenting with strongly coiled hair involving a localized area of the scalp or covering the entire side and occurring in non-black people. Isolated or localized wooly hair is usually benign and is not related to other disorders and/or complications. On the contrary, the generalized type may be related to disorders and s...

Sir, Ehlers-Danlos syndrome (EDS) is a rare connective tissue disease manifested clinically as joint hypermobility, skin hyperextensibility, poor wound healing with abnormal scarring and bruising due to blood vessel fragility (1). The diagnosis of EDS is based on a scoring system that requires a time-consuming examination (2, 3). Recently attempts have been made to find additional minor criteri...

www.aafp.org/afp AMERICAN FAMILY PHYSICIAN 1007 the hair is broken or shed at the roots, and whether shedding or thinning has increased. The patient’s diet, medications, present and past medical conditions, and family history of alopecia are other important factors. The physical examination has three parts. First, the scalp is examined for evidence of erythema, scaling, or inflammation. Follicu...

Monilethrix is an autosomal dominant hair shaft disorder characterized by intermittent constrictions result in short and fragility hair. We present here two afghan siblings girl, 5 and 3 years, born of consanguineous marriage, come to our department of dermatology with complains of hair loss and inability to growth long hair of the scalp since birth. When the hairs reached a certain length, the...

Mammalian hair follicles cycle between stages of rapid growth (anagen) and metabolic quiescence (telogen) throughout life. Transition from anagen to telogen involves an intermediate stage, catagen, consisting of a swift, apoptosis-driven involution of the lower half of the follicle. How catagen is coordinated, and spares the progenitor cells needed for anagen re-entry, is poorly understood. Ker...

The term 'keratin' is generally accepted to refer to the epithelial keratins of soft and hard epithelial tissues such as: skin, cornea, hair and nail. Since their initial characterization, the total number of mammalian keratins has increased to 54, including 28 type I and 26 type II keratins. Inherited defects that weaken the keratin load-bearing cytoskeleton produce phenotypes characterized by...

tion meaning necklace hair, is a rare ectoder.mal condition inherited as an autosomal dominant trait with high penetrance and variable expressivity.1.2 The latter characteristic may be partially due to hormonal fluctuations, including puberty and pregnancy, and to environmental factors such as seasonal changes.2 The degree of expressivity is difficult to quantitate. 2 Some patients are so mildl...

This study aims to develop seismic fragility curves for a typical pile-supported wharf. Fragility curve is one of the popular tools in seismic performance evaluation of a structure. The software FLAC2D was used to simulate the seismic performance of the wharf structure. Using eight time history records, occurred in past, as seismic loading, incremental dynamic analysis (IDA) was applied for sei...