(AT) and Alopecia Universalis
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Anatomy and Physiology of Hair
Chapter 2 Provisional chapter Anatomy and Physiology of Hair Anatomy and Physiology of Hair Bilgen Erdoğan ğ AdditionalBilgen Erdo informationan is available at the end of the chapter Additional information is available at the end of the chapter http://dx.doi.org/10.5772/67269 Abstract Hair is one of the characteristic features of mammals and has various functions such as protection against external factors; producing sebum, apocrine sweat and pheromones; impact on social and sexual interactions; thermoregulation and being a resource for stem cells. Hair is a derivative of the epidermis and consists of two distinct parts: the follicle and the hair shaft. The follicle is the essential unit for the generation of hair. The hair shaft consists of a cortex and cuticle cells, and a medulla for some types of hairs. Hair follicle has a continuous growth and rest sequence named hair cycle. The duration of growth and rest cycles is coordinated by many endocrine, vascular and neural stimuli and depends not only on localization of the hair but also on various factors, like age and nutritional habits. Distinctive anatomy and physiology of hair follicle are presented in this chapter. Extensive knowledge on anatomical and physiological aspects of hair can contribute to understand and heal different hair disorders. Keywords: hair, follicle, anatomy, physiology, shaft 1. Introduction The hair follicle is one of the characteristic features of mammals serves as a unique miniorgan (Figure 1). In humans, hair has various functions such as protection against external factors, sebum, apocrine sweat and pheromones production and thermoregulation. The hair also plays important roles for the individual’s social and sexual interaction [1, 2]. -
(PRP) Treatment for Female Androgenetic Alopecia: Review of the Literature
medicina Review Investigating the Safety and Efficacy of Platelet-Rich Plasma (PRP) Treatment for Female Androgenetic Alopecia: Review of the Literature Santo Raffaele Mercuri 1, Giovanni Paolino 1, Matteo Riccardo Di Nicola 1,* and Laura Vollono 2 1 Unit of Dermatology, IRCCS San Raffaele Hospital, 20132 Milan, Italy; [email protected] (S.R.M.); [email protected] (G.P.) 2 Via Po 102, 00198 Rome, Italy; [email protected] * Correspondence: [email protected] Abstract: Background: female androgenetic alopecia (FAGA) is a common cause of non-scarring alopecia in women, affecting approximately 40% of women by age 50, bearing a significant psy- chosocial burden on affected patients. Platelet-rich plasma (PRP) has been widely investigated as a potential effective treatment for several dermatological conditions, including male androgenetic alopecia (MAGA). However, few studies have been conducted focusing on the use of PRP in FAGA. The aim of this review was to identify reports that investigated the use of PRP for the treatment of FAGA. Methods: Electronic databases of MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) from inception to September 2020 have been searched using different combinations of the following terms: “androgenetic alopecia,” “FAGA,” “female pattern hair loss,” “platelet-rich fibrin,” “platelet-rich plasma,” and “PRP”. Results and conclusions: Eight (n = 8) clinical studies consistent with our research were identified. A total of 197 subjects has been enrolled in the included studies. All of them were adult female patients (mean age: 38.9) affected by female Citation: Mercuri, S.R.; Paolino, G.; Di Nicola, M.R.; Vollono, L. -
Herb Lotions to Regrow Hair in Patients with Intractable Alopecia Areata Hideo Nakayama*, Ko-Ron Chen Meguro Chen Dermatology Clinic, Tokyo, Japan
Clinical and Medical Investigations Research Article ISSN: 2398-5763 Herb lotions to regrow hair in patients with intractable alopecia areata Hideo Nakayama*, Ko-Ron Chen Meguro Chen Dermatology Clinic, Tokyo, Japan Abstract The history of herbal medicine in China goes back more than 1,000 years. Many kinds of mixtures of herbs that are effective to diseases or symptoms have been transmitted from the middle ages to today under names such as Traditional Chinese Medicine (TCM) in China and Kampo in Japan. For the treatment of severe and intractable alopecia areata, such as alopecia universalis, totalis, diffusa etc., herb lotions are known to be effective in hair regrowth. Laiso®, Fukisin® in Japan and 101® in China are such effective examples. As to treat such cases, systemic usage of corticosteroid hormones are surely effective, however, considering their side effects, long term usage should be refrained. There are also these who should refrain such as small children, and patients with peptic ulcers, chronic infections and osteoporosis. AL-8 and AL-4 were the prescriptions removing herbs which are not allowed in Japanese Pharmacological regulations from 101, and salvia miltiorrhiza radix (SMR) is the most effective herb for hair growth, also the causation to produce contact sensitization. Therefore, the mechanism of hair growth of these herb lotions in which the rate of effectiveness was in average 64.8% on 54 severe intractable cases of alopecia areata, was very similar to DNCB and SADBE. The most recommended way of developing herb lotion with high ability of hairgrowth is to use SMR but its concentration should not exceed 2%, and when sensitization occurs, the lotion should be changed to Laiso® or Fukisin®, which do not contain SMR. -
Eyebrow Transplant
Case Report J Cosmet Med 2020;4(1):46-50 https://doi.org/10.25056/JCM.2020.4.1.46 pISSN 2508-8831, eISSN 2586-0585 Eyebrow transplant Viroj Vong, MD H.H.H. Hair Transplant Center, Bangkok, Thailand Eyebrow compose of very unique characteristics hair. Only hair from lower nape of occipital scalp or very light pubic hair can match loosely as donor hair. Blonde hair or light color hair give better result. Black Asian hair is more difficult because of the contrast between skin and hair. Design eyebrow follow natural pattern, gender, direction within normal variation is very important to make it look natural. Donor hair can be done by 2 methods. Common one is H.H.H. FUE. FUE is done by extract each unit of hair follicle out from occipital scalp then transplant to eyebrow. Second is Strip harvesting by remove a piece of occipital scalp divide to follicular unit. Then transplant this unit to eyebrow. FUE produce no scar at the occipital scalp (Donor site). Strip harvesting produce a linear scar at the donor site (occipital scalp). Keywords: eyebrow; hair transplant Introduction tion and blood test. He consulted his gastrointestinal specialist in Britain, who confirmed that he was safe to undergo hair The patient was white, male, and 75 years old. He was not transplantation. His vital signs and blood test results for human happy with his eyebrows and thought they were too thin. He immunodeficiency virus (HIV), bleeding time, and coagulation recovered from Crohn’s disease of his colon. At the time of the time were all within their normal limits. -
Hypertrichosis in Alopecia Universalis and Complex Regional Pain Syndrome
NEUROIMAGES Hypertrichosis in alopecia universalis and complex regional pain syndrome Figure 1 Alopecia universalis in a 46-year- Figure 2 Hypertrichosis of the fifth digit of the old woman with complex regional complex regional pain syndrome– pain syndrome I affected hand This 46-year-old woman developed complex regional pain syndrome (CRPS) I in the right hand after distor- tion of the wrist. Ten years before, the diagnosis of alopecia areata was made with subsequent complete loss of scalp and body hair (alopecia universalis; figure 1). Apart from sensory, motor, and autonomic changes, most strikingly, hypertrichosis of the fifth digit was detectable on the right hand (figure 2). Hypertrichosis is common in CRPS.1 The underlying mechanisms are poorly understood and may involve increased neurogenic inflammation.2 This case nicely illustrates the powerful hair growth stimulus in CRPS. Florian T. Nickel, MD, Christian Maiho¨fner, MD, PhD, Erlangen, Germany Disclosure: The authors report no disclosures. Address correspondence and reprint requests to Dr. Florian T. Nickel, Department of Neurology, University of Erlangen-Nuremberg, Schwabachanlage 6, 91054 Erlangen, Germany; [email protected] 1. Birklein F, Riedl B, Sieweke N, Weber M, Neundorfer B. Neurological findings in complex regional pain syndromes: analysis of 145 cases. Acta Neurol Scand 2000;101:262–269. 2. Birklein F, Schmelz M, Schifter S, Weber M. The important role of neuropeptides in complex regional pain syndrome. Neurology 2001;57:2179–2184. Copyright © 2010 by -
Xeljanz Shows Promise As Treatment for Alopecia Areata in Adolescents
Xeljanz shows promise as treatment for alopecia areata in adole... http://www.healio.com/dermatology/hair-nails/news/online/{0c... IN THE JOURNALS Xeljanz shows promise as treatment for alopecia areata in adolescents Craiglow BG, et al. J Am Acad Dermatol. 2016;doi:10.1016/j.jaad.2016.09.006. November 3, 2016 Treatment with Xeljanz in adolescents with alopecia areata resulted in significant hair regrowth for the majority of the patients, with mild adverse events, according to recently published study results. Brent A. King, MD, PhD, assistant professor of dermatology, Yale School of Medicine, and colleagues studied 13 adolescent patients (median age 15 years; 77% male) with alopecia areata treated with Xeljanz (tofacitinib, Pfizer) between July 2014 and May 2016 at a tertiary care center clinic. They used the Severity of Alopecia Tool (SALT) to measure severity of disease, and laboratory monitoring, physical examinations and review of systems to measure adverse events. The patients were treated for a median duration of 5 months. Patient age ranged from 12 to 17 years at time of treatment initiation. Six patients had alopecia universalis, one had alopecia totalis and six had alopecia areata. The median duration of disease before beginning therapy of Brent A. King 8 years. All patients received tofacitinib 5 mg twice daily. One patient who had complete regrowth over 5 months developed four 1- to 3-cm patches of alopecia, and received an increased dose of 10 mg in the morning and 5 mg in the evening, with full regrowth occurring again. Clinically significant hair growth was experienced by nine patients, and very minimal hair growth was experienced by three patients. -
An Unpleasant Reality with Interferon Alfa-2B and Ribavirin Treatment for Hepatitis C
Advanced Research in Gastroenterology & Hepatology Case Report Adv Res Gastroentero Hepatol Volume 1 Issue 3 - January 2016 Copyright © All rights are reserved by Parveen Malhotra Alopecia Universalis- An Unpleasant Reality with Interferon Alfa-2b and Ribavirin Treatment for Hepatitis C Parveen Malhotra*, Naveen Malhotra, Vani Malhotra, Ajay Chugh, Abhishek Chaturvedi, Parul Chandrika and Ishita Singh Department of Medical Gastroenterology, Anaesthesiology, Obstetrics & Gynaecology, Pt.B.D.S. Post Graduate Institute of Medical Sciences (PGIMS), India Submission: January 01, 2016; Published: January 29, 2016 *Corresponding author: Parveen Malhotra, Department of Medical Gastroenterology, PGIMS, 128/19, Civil Hospital Road, Rohtak– 124001 (Haryana) India, Tel: 919671000017; Email: Abstract Numerous cutaneous side effects of combination Pegylated interferon alfa-2b (PEG-IFN) and ribavirin (RBV) therapy have been reported. Although cases alopecia areata (AA) associated with PEG-IFN/RBV therapy have been reported in the literature, but alopecia universalis is uncommon entity. We have treated up till now around 3500 patients suffering from this disease with Pegylated Interferon-2b and ribavirin, as oral directly acting antivirals has been recently launched in India. Out of these 3500 patients, 1470 (42%) patients developed alopecia during various stages of treatment, some even after stopping of treatment. Five patients developed Alopecia Universalis (AU) while undergoing the treatment which makes prevalence rate of 14% in total of 3500 but if we calculate prevalence of Alopecia Universalis in patients who developed alopecia on treatment, it increases to 34%. Now the good thing is that we have already entered the phase of Interferon free treatment in India, thus patients will get rid of these frustrating side effects like AA and AU which undermines the importance of successful treatment after achievement of sustained virological response. -
Vellus Hair Study Template
VELLUS HAIR STUDY TEMPLATE 1 BrighTex Bio-Photonics Your Artificial Intelligence Company ABSTRACT The objective of this clinical study is to assess the re-growth of Vellus hair in four weeks after single use of the Vellus Hair removal device by Group A and efficacy of the Vellus Hair removal device to reduce the appearance of fine lines and wrinkles, brighten dark spots and correct uneven skin tone following four weeks and eight weeks of continued use, as once in a week by Group B. Measurements for Group A and B are assessed at Baseline (Before use of Vellus hair removal device), Immediate (Immediately after use of Vellus hair removal device), and Week 4 and at Week 8 only for Group B by BrighTex Bio Photonics Clarity Research 3D system and D – Squame measurements are recorded. Subjects in Group A will use the Vellus Hair removal device once in the laboratory and will return after 4 weeks to assess the regrowth of Vellus hair. It was concluded that there was no increase in the hair pixels and surface area at Week 4 compared to baseline. Hence, the density of the Vellus hair did not increase from baseline for Group A. Subjects in Group B will return after 4 weeks and 8 weeks of once in a week device use to assess changes in fine lines, wrinkles, dark spots, and uneven skin tone. It was concluded that the Hair Pixels and Surface Area at Immediate, Week 4 and Week 8, % of subjects showed improvement from range 74.10% - 84.70% whereas for Wrinkles - 2D Fine wrinkles average length showed improvement at Week 4 and Week 8 for Group B, % of subjects showed improvement from range 48.30% - 51.90%. -
Alopecia Areata: Evidence-Based Treatments
Alopecia Areata: Evidence-Based Treatments Seema Garg and Andrew G. Messenger Alopecia areata is a common condition causing nonscarring hair loss. It may be patchy, involve the entire scalp (alopecia totalis) or whole body (alopecia universalis). Patients may recover spontaneously but the disorder can follow a course of recurrent relapses or result in persistent hair loss. Alopecia areata can cause great psychological distress, and the most important aspect of management is counseling the patient about the unpredictable nature and course of the condition as well as the available effective treatments, with details of their side effects. Although many treatments have been shown to stimulate hair growth in alopecia areata, there are limited data on their long-term efficacy and impact on quality of life. We review the evidence for the following commonly used treatments: corticosteroids (topical, intralesional, and systemic), topical sensitizers (diphenylcyclopropenone), psor- alen and ultraviolet A phototherapy (PUVA), minoxidil and dithranol. Semin Cutan Med Surg 28:15-18 © 2009 Elsevier Inc. All rights reserved. lopecia areata (AA) is a chronic inflammatory condition caus- with AA having nail involvement. Recovery can occur spontaneously, Aing nonscarring hair loss. The lifetime risk of developing the although hair loss can recur and progress to alopecia totalis (total loss of condition has been estimated at 1.7% and it accounts for 1% to 2% scalp hair) or universalis (both body and scalp hair). Diagnosis is usu- of new patients seen in dermatology clinics in the United Kingdom ally made clinically, and investigations usually are unnecessary. Poor and United States.1 The onset may occur at any age; however, the prognosis is linked to the presence of other immune diseases, family majority (60%) commence before 20 years of age.2 There is equal history of AA, young age at onset, nail dystrophy, extensive hair loss, distribution of incidence across races and sexes. -
Case of Persistent Regrowth of Blond Hair in a Previously Brunette Alopecia Areata Totalis Patient
Case of Persistent Regrowth of Blond Hair in a Previously Brunette Alopecia Areata Totalis Patient Karla Snider, DO,* John Young, MD** *PGYIII, Silver Falls Dermatology/Western University, Salem, OR **Program Director, Dermatology Residency Program, Silver Falls Dermatology, Salem, OR Abstract We present a case of a brunette, 64-year-old female with no previous history of alopecia areata who presented to our clinic with diffuse hair loss over the scalp. She was treated with triamcinolone acetonide intralesional injections and experienced hair re-growth of initially white hair that then partially re-pigmented to blond at the vertex. Two years following initiation of therapy, she continued to have blond hair growth on her scalp with no dark hair re-growth and no recurrence of alopecia areata. Introduction (CBC), comprehensive metabolic panel (CMP), along the periphery of the occipital, parietal and Alopecia areata (AA) is a fairly common thyroid stimulating hormone (TSH) test and temporal scalp), sisaipho pattern (loss of hair in autoimmune disorder of non-scarring hair loss. antinuclear antibody (ANA) test. All values were the frontal parietotemporal scalp), patchy hair unremarkable, and the ANA was negative. The loss (reticular variant) and a diffuse thinning The disease commonly presents as hair loss from 2 any hair-bearing area of the body. Following patient declined a biopsy. variant. Often, “exclamation point hairs” can be hair loss, it is not rare to see initial growth of A clinical diagnosis of alopecia areata was seen in and around the margins of the hair loss. depigmented or hypopigmented hair in areas made. The patient was treated with 5.0 mg/mL The distal ends of these hairs are thicker than the proximal ends, and they are a marker of active of regrowth in the first anagen cycle. -
Alopecia Areata. Current Situation and Perspectives
Review Arch Argent Pediatr 2017;115(6):e404-e411 / e404 Alopecia Areata. Current situation and perspectives Karina J. Juárez-Rendón, M.D.a, Gildardo Rivera Sánchez, M.D.b, Miguel Á. Reyes-López, M.D.b, José E. García-Ortiz, M.D.c, Virgilio Bocanegra-García, M.D.b, Iliana Guardiola-Avila, M.D.a and María L. Altamirano-García, M.D.d ABSTRACT Epidemiology Alopecia areata (AA) is a dermatological disease Diverse studies have established characterized by non-scarring hair loss of the scalp and/or body, with an unpredictable and that AA affects 1-2% of the general variable evolution in the patients in which, population with an estimated lifetime despite multidisciplinary efforts, its etiology is risk of 1.7%.7,8 However, prevalence not entirely known, although some evidence can vary between 0.1 and 6.9% suggests that environmental, immunological and 9 genetic factors could be generating the disease. depending on the population studied. The aim of this review is to provide an updated In the United States, AA affects 0.7 to panorama of the clinical characteristics, diagnosis 3% of its population. In the United and treatment of AA, to analyze the mechanisms Kingdom, approximately 2% of the that could participate in its etiology, as well as 10 to review some of the most important genetic population presents this disease. variants that could confer susceptibility to the In Mexico, the reported prevalence development of this disease. is between 0.2 to 3.8%11; in Korea, it Key words: Alopecia Areata, genes, susceptibility. a. CONACYT Research has been estimated that AA affects 12 Fellow - Centro http://dx.doi.org/10.5546/aap.2017.eng.e404 between 0.9 and 6.9% of individuals. -
Alopecia Areata - Bald Spot
Alopecia Areata - Bald Spot Alopecia Areata is a hair loss condition characterized by the rapid onset of hair loss in a sharply defined area. Any hair-bearing surface can be affected, but the most noticeable surface is the scalp. The reason alopecia areata occurs is not completely known. In some cases it is associated with other diseases, but most of the time it is not. Research is ongoing to determine the best treatment for this sometimes-striking disease. Causes of Alopecia Areata There are several different hypotheses as to what causes alopecia areata. Genetic factors seem to play an important role since there is a higher frequency of a family history of alopecia areata in people who are affected. Alopecia areata appears to also have an autoimmune factor causing the patient to develop antibodies to different hair follicle structures. Certain chemicals that are a part of the immune system called cytokines may play a role in alopecia areata by inhibiting hair follicle growth. Some studies show that emotional stress may also cause alopecia areata. Hair loss occurs because the hair follicles in a discreet area all enter the telogen or late catagen stage of hair growth. In the catagen stage the hair follicle stops growing and in the telogen stage it falls out. Normally hairs are going through these stages at random and the growing hairs on the rest of the head outnumber the hairs that fall out. In alopecia areata, something causes all the hairs in a certain area to enter the telogen or catagen stage at the same time.