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Diseases of hair loss can affect anyone, from young children to adolescents 
and adults. Hair goes through three stages in the natural cycle of growth: anagenna phase, catagen phase, telogen phase. Normal, healthy hair grows about 1 cm per month and go through the growth cycle, which lasts about two to six years. Hair loss is a part of everyday life, however, some people may be affected by the excessive amount of hair loss. Common types of hair loss diseases
Common Types of Hair Loss Diseases
There are many kinds of diseases, hair loss, and to classify these diseases or classified on the basis of the first phase of the cycle of hair growth taking place.* Androgenetic alopecia
Androgenic alopecia is a type of hair loss in terms of growth or anagenna phase of the hair cycle becomes shorter and shorter. This type of hair loss is inherited and cause disease in the hair follicles to produce hair that is thinner than average. In this type of hair loss, hair becomes less and less drying of the pores in the end.
* Alopecia areata
Alopecia areata: a common type of hair loss is characterized by sudden loss of patches of hair. This condition is caused by the immune system attacks hair follicles in, and may become worse when the hair follicles in the telogen phase to pass the life cycle of hair. Alopecia areata affects 1 in 1000 individuals and may be due to several reasons. One of the most common mistakes made cuase alopecia areata in the system of individuals, when corrected, could lead to a complete re-growth of hair.
Alopecia is available in different types: multilocularis Alopecia areata, barbae alopecia areata, totalis alopecia areata, monolocularis alopecia areata, diffuse hair loss and alopecia areata Universalis
* Alopecia Universalis
Alopecia Universalis is a rare form of alopecia characterized by hair loss on all parts of the body. This type of hair loss is a variant of alopecia areata and varies according to the former based on the amount of hair loss.
* Telogen effluvium
Telogen effluvium is a type of hair loss that occurs when many branches of the hair to go into a resting phase or telogen, thereby causing thinning of hair shedding. This type of hair disorder affecting no more than 50% of all hair and can last up to three months. And can cause telogen effluvium can be attributed to stress and malnutrition, and medical side effects and changes in hormone levels.
Some types of hair loss is not associated with the cycle of hair growth. They are:
* Trichotillomania
Plucking the hair is a condition characterized by compulsive, plucking the continuing and withdrawn from persons own hair. This disorder is common in treating small children, but adults who suffer from this condition rarely recover.
Traction alopecia
Traction alopecia is a condition characterized by loss of hair in the hairline and a pronounced forehead and face. This type of hair loss is caused by hairstyles that pull hair too tight.
* Kel headset
Tinea capitis is a skin disease caused by the level of fungal infection and is characterized by bare patches of skin on the scalp of individuals. This can affect the skin of the scalp and eyebrows and eyelashes. Also known as ringworm of the scalp, this disease attacks the pillars of the hair follicles and hair are often found in children who are under 10 years.
Symptoms of hair loss
Symptoms of hair loss usually occurs as a result of thinning hair and shedding of hair, which ultimately leads to hair loss.
The most common hair loss disease, androgenetic alopecia usually occurs by loss of hair on the forehead and the hairline in men, while women with this condition experience thinning of hair throughout the scalp.
Conditions such as trichotillomania and alopecia areata results in patches of hair loss and hair loss due to certain medications and often leads to a fall in large blocks of hair.
