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Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
Acanthosis nigricans is a medical sign characterised by brown-to-black, poorly defined, velvety hyperpigmentation of the skin. [1] It is usually found in body folds, [ 2 ] such as the posterior and lateral folds of the neck , the armpits , groin , navel , forehead and other areas.
In cases with a greater number of patches, hair can either grow back or progress to alopecia areata totalis or, in rare cases, alopecia areata universalis. [ 21 ] No loss of body function occurs, and the effects of alopecia areata are psychological (loss of self-image due to hair loss), although these can be severe.
The causes of the HAIR-AN syndrome are not fully understood. Some studies hypothesize that the HAIR-AN syndrome is caused by a combination of genetic and environmental factors. [7] [1] HAIR-AN is found in 1-3% women affected hyperandrogenism. [8] Other studies have proposed the SAHA syndrome as a cause of the HAIR-AN syndrome. [9]
Hair diseases are illnesses that impact the persistence and regular growth of hair. Types of hair diseases include folliculitis , hirsutism , hypertrichosis , hypotrichosis ( alopecia ), Menkes kinky hair syndrome , monilethrix , and piedra .
Generally, the East Asian, Central Asian and Native American population has straight hair with a very thick cuticle layer [5] and South Asians have thick, wavy or curly hair, [6] while the general hair type seen in black African hair is thick, curly and dense with more hair growing from the head. The curly quality comes from the shape of the ...
B-vitamins "help with hair health and renewal of cells necessary for hair growth," explains Vandana Sheth, RDN, a Los Angeles-based registered dietitian and author of My Indian Table: Quick ...
The treatment of choice by dermatologists is a safe and inexpensive oral medication, griseofulvin, a secondary metabolite of the fungus Penicillium griseofulvin. This compound is fungistatic (inhibiting the growth or reproduction of fungi) and works by affecting the microtubular system of fungi, interfering with the mitotic spindle and ...