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T cell lymphocytes gather around the affected follicles, causing the hair loss and inflammation.

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Itching

Patchy hair loss

Thinning and discolored hair

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http://www.medicinenet.com/alopecia_areata/article.htm

http://medicalassessmentonline.com/john/Alopecia_hair_cycle2014.jpg

http://www.hairclub.com/hair-life-cycle

https://www.sciencedaily.com/releases/2001/12/011224080233.htm

http://www.americanhairloss.org/women_hair_loss/treatment.asp

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Genetics

Disruption in the Immune System

Aging

Malnutrition

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Androgen Receptor Pathway

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Famous competitor on TV Show,

American Ninja Warrior  Kevin Bull.

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Alopecia Areata happens to people who have the gene, when that person is exposed to a virus, it can trigger Alopecia. Causing white blood cells to attack hair follicles. When Hair pigment producing cells are produced, it triggers the white blood cells mistaking the hair pigment producing cells as foreign substances.

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- Rheumatoid arthritis and different types of blood cancers
- Reverse alopecia characteristics

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Unfortunately, there is no impending cure for Alopecia Areata. Scientists are still trying to figure out exactly what alopecia areata is. A better understanding of the disease will help gain knowledge on how to create treatment, and possiblly a cure.

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With Alopecia Areata, white blood cells attack the healthy cells in the hair follicle. The attacked follicles become small and their process of hair reproduction slows.

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Inside of the hair follicle,  the 5 alpha reductase takes the testosterone and converts it to DHT forming dimers

The dimers find their way to the nucleus and are bound to DNA.

Genes are targeted and DNA undergoes transcription.

They are soon converted to proteins, creating a biological response.