Journal of family & community medicine · 2014
Consanguinity pattern and heritability of Vitiligo in Arar, Saudi Arabia.
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Alenizi Dhaifallah A
Аннотация
CONTEXT: Epidemiological studies have shown that vitiligo is a complex trait, involving combinations of pathogenic effects of multiple susceptibility genes as well as environmental risk factors.
AIM: To observe whether consanguinity increased the incidence of vitiligo in Saudi patients from Arar.
PATIENTS AND METHODS: This study included 69 Saudi patients with vitiligo and their families. These patients, selected from the experience specialist dermatology center in Arar, from April 2011 to 2012, were interviewed by a dermatologist to confirm the diagnosis and complete a questionnaire.
RESULTS: A total of 69 patients, 40 males and 29 females were selected. Their mean age was 34.5 ± 11.8 years with the median age of 23 years. The mean age at onset of disease was 27.9 ± 12.9 years. The mean duration of the disease was 9.7 ± 5.3 years. The frequency of focal, vulgaris, universal, and acrofacial subtypes was 22 (31.9%), 21 (30.4%), 8 (11.6%), and 18 (26.1%), respectively. A positive family history of vitiligo was obtained in 45 (65.2%) cases. A comparison of the frequency of vitiligo among siblings in relation to the general population was more in accord with the multifactorial model.
CONCLUSION: Consanguinity in marriage increases the incidence of the disease. Therefore, genetic counseling and premarital examination would be important contributions to lower the prevalence of vitiligo.
AIM: To observe whether consanguinity increased the incidence of vitiligo in Saudi patients from Arar.
PATIENTS AND METHODS: This study included 69 Saudi patients with vitiligo and their families. These patients, selected from the experience specialist dermatology center in Arar, from April 2011 to 2012, were interviewed by a dermatologist to confirm the diagnosis and complete a questionnaire.
RESULTS: A total of 69 patients, 40 males and 29 females were selected. Their mean age was 34.5 ± 11.8 years with the median age of 23 years. The mean age at onset of disease was 27.9 ± 12.9 years. The mean duration of the disease was 9.7 ± 5.3 years. The frequency of focal, vulgaris, universal, and acrofacial subtypes was 22 (31.9%), 21 (30.4%), 8 (11.6%), and 18 (26.1%), respectively. A positive family history of vitiligo was obtained in 45 (65.2%) cases. A comparison of the frequency of vitiligo among siblings in relation to the general population was more in accord with the multifactorial model.
CONCLUSION: Consanguinity in marriage increases the incidence of the disease. Therefore, genetic counseling and premarital examination would be important contributions to lower the prevalence of vitiligo.