Changes in the color of the external genitalia can be caused by a variety of factors that range from medical conditions, blood flow and infections to hormonal fluctuations. Many things change with age. Some changes may be harmless, while others may indicate underlying health problems. It is essential that everyone observes changes in the color of the genital skin. The cause must be established in order to make a timely correct diagnosis and prescribe appropriate treatment if necessary. What could be the reasons? 1. Increased blood flow. Genital color can be affected by blood flow. The increased blood circulation in the external genital area that occurs during stimulation or sexual arousal can cause temporary reddening or darkening of the skin. This phenomenon is a natural reaction to sexual arousal and subsides after this stimulation has passed. 2. Infections or inflammations. Infections or inflammatory conditions that affect the genital area can change the color of the skin. An example of some such conditions are sexually transmitted infections, fungal infections or dermatitis. They can cause redness, discoloration or swelling of the external genitalia. Inflammation disrupts the normal pigmentation of the skin and can lead to changes in its structure and color. 3. Hormonal conditions. Hormonal changes, especially during puberty, menstruation, pregnancy or menopause can affect the color of the genitals. During puberty, increased levels of hormones such as testosterone or estrogen can stimulate changes in genital skin pigmentation. During pregnancy and menstruation, temporary changes are caused due to hormonal imbalance. 4. Skin pigmentation. Like other parts of the body, the skin of the genitals contains melanocytes. These are cells that are responsible for producing the pigment that gives the skin its color – melanin. Genetic factors, sun exposure, and ethnicity can all contribute to variation in pigmentation. 5. Medical conditions. Certain medical conditions can also cause changes in the color of the external genitalia. Lichen sclerosus is an inflammatory chronic condition that results in white patches and thinning of the skin. Vitiligo is a skin disease characterized by loss of skin pigment. It can affect the skin of the genitals and lead to depigmented patches. Bruising due to injury can also cause temporary discoloration. 6. Age-related changes. With age, the skin undergoes natural changes, including changes in pigmentation and texture. The external genitalia are not “immunized” against these changes. Discoloration can occur due to thinning of the skin and reduced collagen production. References: 1. https://blog.flexfits.com/vulvar-skin-color-changes-heres-why-it-might-happen/? 2. https://www.healthline.com/health/why-is-my-private-area-dark 3. https://www.instyle.com/beauty/health-fitness/labia-color-meaning