Hypertrophy of Labia Minora: Causes, Genetics & Idiopathic Cases

Causes of Labial Hypertrophy

Idiopathic

In some cases, the cause is unknown.

Genetic Conditions

• Klinefelter syndrome (XXY): Extra X chromosome in males.
• XYY syndrome: Extra Y chromosome in males.
• Fragile X syndrome: Causes intellectual disability and behavioral issues.

Developmental Abnormalities

• Imperforate hymen: Hymen completely blocks vaginal opening.
• Labial fusion: Labia minora are fused together.
• Ectopic breast tissue: Breast tissue develops on the labia minora.

Other Contributing Factors

• Trauma: Injury to the labia minora.
• Infection: Vulvar or vaginal infections.
• Inflammation: Conditions like lichen sclerosus.
• Hormonal imbalances: Pregnancy, menopause, or hormone therapy.
• Aging: Thinning of vaginal tissues.
• Medications: Certain birth control pills or hormone replacement therapy.