·--------------------------------------------------------------------------------------------------------············xiv CHAPTER 1: The inner ear and hair cell resonant frequency Introduction: Sensory organs of the inner ear and innervation ..... ------------------------------·--------·1 Hair cell shape and innervation of the cochlea and sacculus ......................... 2 Frequency detection ...

Hair dyes are more and more used and the role of the exposure to these products in the development of skin reactions in the exposed region is suspected. The aim of this study is to assess the effects of hair dyes on facial skin and scalp sensitivity by performing a Computer Assisted Web Interview on 1257 women older than 15 years old. Differences were observed in the scores evaluating facial sk...

INTRODUCTION Role of hair dyes in the etiology of breast cancer has occasionally raised concern but previous research has concluded with mixed results. Remnants of prohibited aromatic amines have been found in many hair dye products, and elevated levels of DNA-adducts of these amines have been detected from breast epithelial cells of hair dye users. However, the IARC working group has concluded...

BACKGROUND AND OBJECTIVE Use of hair dyes for glioma risk has been investigated in numerous epidemiological studies, but the evidence is inconsistent. Therefore, a meta-analysis was performed to estimate the association between hair dyes use and glioma risk. METHODS We searched PubMed and EMBASE databases without any limitations, covering all papers published by the end of March 8, 2013. Coho...

BACKGROUND Procyanidins are a subclass of flavonoids and consist of oligomers of catechin that naturally occur in plants and are known to exert many physiological effects, including antioxidant, anti-inflammatory, and enzyme inhibitory effects. These possible inhibitory effects of the procyanidins were known to involve metal chelation, radical trapping, or direct enzyme binding. PURPOSE The p...

BACKGROUND Carcinogenic aromatic amines derived from hair dyes have recently received new attention. One of these is ortho (o)-toluidine, which is classified as carcinogenic to humans. OBJECTIVES To clarify exposure of hairdressers to potentially carcinogenic aromatic amines, including o-toluidine. METHODS We measured eight potentially carcinogenic aromatic amines in the blood of 295 hairdr...

AIMS OF STUDY Hair dye (Paraphenylene di-amine, PPD) poisoning has high morbidity and mortality and its incidence has increased dramatically in the past 4 years. A prospective study was planned to assess the clinical profile and outcome with different treatment approaches. MATERIAL AND METHODS The material comprised of 1020 cases admitted in Medicine Department of MLB Medical College, Jhansi,...

Hair plays a significant role in body image, and its appearance can be changed relatively easily without resort to surgical procedures. Cosmetics and techniques have therefore been used to change hair appearance since time immemorial. The cosmetics industry has developed efficient products that can be used on healthy hair or act on concomitant diseases of the hair and scalp. Dyes embellish the ...

Sir, Body dysmorphic disorder (BDD) is primarily a psychiatric condition, but frequently found in dermatologi-cal settings, where it often goes undetected (1). BDD is characterized by subjective beliefs of physical ugliness or disfigurement despite an objectively normal appearance. Often minor blemishes are blown out of proportion. The affected individual is convinced that others perceive them ...

OBJECTIVE The objective of the following study was to assess the knowledge, practice, perception and adverse reactions among hair dye users. SETTINGS AND DESIGN A cross-sectional study was conducted on patients, their attenders and staff of SDUMC. MATERIALS AND METHODS A questionnaire (28) pertaining to use of hair dyes and reactions to them was administered randomly. STATISTICAL ANALYSIS...