Types of Alopecia
Excessive or abnormal hair loss is known as alopecia, and there are several kinds. What all hair loss has in common, whether it's in men or women, is a symptom of something that's gone wrong in your body. Your hair will remain on your head where it belongs unless hormone imbalance, disease, or some other condition occurs. That condition may be as simple as having a gene that makes you susceptible to male or female pattern baldness or one of the forms of alopecia areata, or it may be as complex as a whole host of diseases.
Hair loss can be a symptom of a short-term event such as stress, pregnancy, disease, or medication, which can all alter hair's growth and shedding phases. In these situations, hair will grow back when the event has passed. Once the cause of the loss is addressed, hairs go back to their random pattern of growth and shedding, and your problem stops.
Androgenetic Alopecia
The majority of women with androgenic alopecia have diffuse thinning on all areas of the scalp. (Men rarely have diffuse thinning but instead have more distinct patterns of baldness.) Some women have a combination of two pattern types.
Alopecia Totalis
Hair loss present over the entire scalp.
Alopecia Universalis
Hair loss which occurs over the entire body, including the scalp, eyebrows etc..
Alopecia Areata
An inappropriate inflammatory reaction is behind alopecia areata. A person's own immune system attacks the roots of hair follicles. Symptoms include patchy shedding of hair, which sometimes develops quite suddenly. About 70% of patients recover their hair within two years, whether or not they receive treatment.
Traction Alopecia
This condition is caused by localized trauma to the hair follicles from tight hairstyles that pull at the hair over time. If the condition is detected early enough, the hair will regrow. Braiding, cornrows, tight ponytails, and extensions are the most common styling causes of traction alopecia.
Cicatricial alopecia
The term "cicatricial alopecia" refers to a diverse group of rare disorders that destroy the hair follicle, replace it with scar tissue, and cause permanent hair loss. In some cases, hair loss is gradual, without symptoms, and is unnoticed for long periods. In other cases, hair loss is associated with severe itching, burning and pain and is rapidly progressive. The inflammation that destroys the follicle is below the skin surface and there is usually no "scar" seen on the scalp. Affected areas of the scalp may show little signs of inflammation, or have redness, scaling, increased or decreased pigmentation, pustules, or draining sinuses. Cicatricial alopecia occurs in otherwise healthy men and women of all ages and is seen worldwide.
