what is Hair whitening ?
Hair diseases
In this article, we will talk about some hair diseases that generally cause damage to the hair roots, hair strands and hair follicles. such as: hair whitening, soberrhoeic dermatitis and hair leprosy.
1. Hair types
hair color (blonde, red, brown, gray, black)
geometrical features ( straight, curly, wavy, buzz)
amount of fat in scalp ( normal, dry, greasy)
2. Hair diseases
hair whitening
hair leprosy
seborrheic dermatitis
hair dandruff
hair loss
alopecia areata
3. Hair transplant methods
follicular unit extraction (FUE)
follicular unit transplantation (FUT)
4. Causes of hair loss
over stretching
diets
inheritance
stress
hormonal changes
burns and surgeries
-Hair whitening
Hair color is the result of the transfer of melanin pigment from melanocytes (skins pigmentation cells) to hair cells located at the root of the hair. Hair color can change from black to blonde. For most people hair whiteness can cause them to feel hopeless and frustrated, and it is sign of premature aging or overthinking.
There is two kind of hair whitening:
Normal hair whitening in normal and old ages.
Premature whiteness of hair
Early whiteness of hair in many cases has been a genetic feature and in this situations it’s permanent and usually untreatable, without any specific reason. In these cases, by definition, a white person in younger than 20 years old and a black person before the age of 30 has white hair.
Sometimes, premature whitening of the hair has a specific cause, such as vitamin deficiency, thyroid disease, immune system disease, anemia, taking some medicine like chloroquine and hard, long-time diets. Some people think that a severe nervous breakdown or sudden stress can lead to hair whitening but this is not scientifically proven. Using some of shampoos and chemicals also can have effects on the hair whitening process.
The only way to remove the appearance of white hair is to use hair colors. A good point about these people is that the white hair will not fall out and will be preserved until adulthood.
-hair leprosy
Hair leprosy is multiply hairs end or multiply the entire length of the hair.
Reasons of hair leprosy:
Physical damage to the hair shoot such as brushing too much the hair, using too much of hairdryer, frequent mash and curling the hair and chemical damages to hair like hair coloring, washing too much with alkaline soap or inappropriate shampoo. For this reason hair leprosy is mainly found on long, dry hairs (they are more sensitive and more fragile). Sometimes the color of these hair changes. To fix the hair leprosy the following items are recommended:
Regularly cutting the ends of the hair. Apply olive oil or sweet almond oil on hair ends instantly after bath and use gentle, specifically for damaged hair shampoo.
-seborrhoeic dermatitis
Seborrheic dermatitis is a general term and includes a group of chronic and recurrent diseases ranging from mild and common conditions including dandruff and oily scalp to moderate and severe types of seborrheic dermatitis which the scalp (or sometimes face, breasts and other areas) was red and itchy and there are different levels of dandruff and inflammation. If we don’t consider dandruff prevalence of seborrheic dermatitis is about 2 -5 %. It’s clear that by considering dandruff the prevalence increases.
The cause of all types of these diseases is a yeast that called pittosporum which is normally seen in peoples skin (that means they naturally reside in human skin) during seborrhoeic dermatitis this fungus transform from spherical status (which is its normal form) to oval (which is its pathogenic form) and this deformation causes the yeast to form free fatty acids. The above fatty acids act harmful to the skin, causing the epidermis cells to duplicate excessively. This excessive cells repelling like dandruff and shells and causes the clinical signs of the disease.
These diseases were not contagious and it is not transmitted by brush and comb. Stress and emotions often make the disease worse. These diseases are usually in periods of exacerbation and its relative healing each can take weeks to months. The prevalence of these diseases is higher in men. In patients with aids depression and Parkinson prevalence of seborrheoic dermatitis is higher.
some of these hair diseases may affect the result of hair transplantation after the surgery. so before planning for hair transplantation visit your dermatologist first.