Clinical, epidemiological characteristics and associated factors of hair greying in Lagos, Nigeria.

Objective: To document the epidemiological, clinical characteristics, believed triggers and associated behaviour in hair greying.

Design: A community based cross-sectional descriptive study was conducted in February 2020 following ethical approval and written informed consent from participants. All participants were clinically evaluated for hair greying, its pattern and location on the scalp. Socio-demographic data were documented. Data was entered and analyzed using the IBM statistics software version 22. Numerical and categorical variables are presented.

Setting: The study was conducted at an urban market in Lagos, Nigeria.

Participants: The study participants comprised 307 adult traders.

Results: The mean age of the 307 participants studied was 42.7±12.8 years. The prevalence of hair greying was 47.6% (51% in males and 45.9% in females). The median (IQR) age of those with grey hair was 52 (44, 59) years. The prevalence of hair greying was 14.8% in those aged 30-34 years and 97.2% in those aged 60 years and above. The prevalence of premature greying was 17.7% and greying before friends and family members was reported at 19.9% and 13%, respectively. Grey hair was diffuse in 81.5%; localized to the frontal area of the scalp in 55.5%. Use of hair dye was noted in 15.8%.

Conclusion: Hair greying is common in the study population. The age at onset is 30 years. Premature hair greying is uncommon in Nigeria. More epidemiological studies of hair greying especially of premature hair greying are needed.

Funding: Funding for this study was provided by the L'Oreal African Hair & Skin Research Grant.