Clinical Trial of Simvastatin to Treat Generalized Vitiligo

Inclusion Criteria: * male gender * ages 18-64 * at least one vitiligo skin lesion measuring at least 2x2 cm in size * willing and able to understand and sign informed consent * able to complete study and comply with study procedures Exclusion Criteria: * history of segmental vitiligo * allergy to statin medications * use of statin medications due to cardiac risks. * use of any medications contraindicated with use of simvastatin * use of topical vitiligo treatments in past 4 weeks * use of laser or light-based vitiligo treatments within the past 8 weeks * treatment with immunomodulating oral medications in the past 4 weeks * use of statin medications in the past 8 weeks * evidence of hepatic dysfunction, personal or family history of non-alcoholic steatotic hepatitis, or personal history of hepatitis * evidence of renal dysfunction * history of myopathy or rhabdomyolysis, or elevated baseline creatinine kinase * recent history of alcohol or drug abuse * history of diabetes * untreated hypothyroidism * other conditions that require the use of interfering topical or systemic therapy * other current conditions that might interfere with study assessments such as, but not limited to, atopic dermatitis and psoriasis * clinically significant abnormal findings or conditions which might, in the opinion of the Principal Investigator, interfere with study evaluations or pose a risk to subject safety during the study.