Hair Loss
Is it normal?
Hair loss occurs daily. On average, lose 50 to 150 hairs per day, but most regrows because the follicle remains. When the fall is over the hair growth, baldness occurs.
Why Hair falls?
Hair grows in small groups called Follicular Units, which are complex structures that include one to four roots follicular, sebaceous glands, muscle, nerve endings and vascular capillaries.
It is known that high levels of stress cause hair loss, which is usually temporary. Autoimmune diseases, the use of certain drugs, other diseases such as hypothyroidism and nutritional deficiency can also cause hair loss or promote early male pattern baldness. A head injury accompanied by scarring can cause permanent damage to hair follicles. Even tight hairstyles like a braid can create tension that can inflame hair follicles, destroying them and stopping hair growth. However 95% of the time hair loss and baldness are genetic (androgens).
Androgenic Alopecia is a condition in which hair miniaturization, which is a process where the hair roots are gradually replaced by hairs thinner, fragile, smaller diameter, length and depth, and disappeared completely.
Severity
There are several classifications to describe the degree of alopecia.
The most commonly used for men was developed by Dr. Hamilton and subsequently modified by Dr. Norwood. This scale (Norwood-Hamilton) is useful when trying to describe a progressive pattern hair loss and the current state (in predictable changes characteristic of male pattern baldness).
Women who suffer androgenic alopecia has a somewhat different pattern of falling man. This loss comes as a diffuse decrease in thickness of hair throughout the scalp. There is also a scale for classifying the pattern called Loss Women Ludwig Scale. There are exceptions in both groups, where the man suffered a diffuse thinning of hair or where the woman experiences a similar model to the Patron of Lost Men (see diagrams right).
