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90. 15% of Black women have CCCA, a type of immune related alopecia that's almost exclusive

to Black women. Other Black women have traction alopecia (caused by hair products and styles most often worn by Black people), Alopecia Areata, and other forms of hair loss.

By contrast, less than 1% of the overall US population has auto-immune Alopecia Areata, the most well known kind of immune-related alopecia.

Alopecia is a common problem among Black women, and Chris Rock knows that.

https://www.sciencedaily.com/releases/2016/03/160304093239.htm

Survey: Almost half of African-American women have experienced hair loss
Date:
March 4, 2016
Source:
American Academy of Dermatology
Summary:
African-American women are prone to hair loss, and new data illustrates the scope of this problem, which often goes undiagnosed. Women who are concerned about losing their hair should consider changing their styling practices and see a dermatologist if they notice any signs of hair loss.

According to Dr. Lenzy, the No. 1 cause of hair loss in African-American women is a condition called central centrifugal cicatricial alopecia (CCCA), a disorder in which inflammation and destruction of hair follicles causes scarring and permanent hair loss. She says this population is also prone to traction alopecia, a type of hair loss caused by styles that pull the hair too tight. In addition to these conditions, she says, African-American women also may be affected by other hair disorders like female pattern baldness.

Dr. Lenzy and other experts believe that genetic predisposition may be a major factor in hair loss among African-American women. Additionally, she says, these women may increase their risk of hair loss by frequently engaging in damaging hair styling practices like braiding, weaves and chemical relaxing. "When hair loss is caused by styling practices, the problem is usually chronic use," she says. "Women who use these styling practices tend to use them repeatedly, and long-term repeated use can result in hair loss."

INVESTIGATING THE ISSUE

Dr. Lenzy partnered with the Black Women's Health Study at Boston University's Slone Epidemiology Center to survey African-American women about their experiences with hair loss. Of the 5,594 women who have completed the survey so far, 47.6 percent reported hair loss on the crown or top of the scalp.

Although hair loss is common among American-American women, Dr. Lenzy says, this problem often goes undiagnosed because patients don't know they should visit a dermatologist for evaluation; the vast majority of survey respondents (81.4 percent) indicated that they had never seen a physician about hair loss. Moreover, while 40.9 percent of respondents reported a level of hair loss consistent with CCCA, only 8.8 percent said a doctor had diagnosed them with this condition.