What are the causes of developing spots during pregnancy?

Generally, the development of skin pigmentation during pregnancy may be caused by genetic factors, hormonal changes, ultraviolet (UV) exposure, emotional fluctuations, or nutritional deficiencies during pregnancy. If discomfort occurs, it is advisable to seek medical attention promptly. Detailed explanations are as follows:

1. Genetics

Genetic factors may influence an individual's sensitivity to hormonal changes and the responsiveness of melanocytes to hormonal stimulation, thereby increasing the likelihood of developing pigmentation during pregnancy. Strengthening sun protection—such as wearing protective clothing and using umbrellas—can help prevent darkening of existing spots.

2. Hormonal Changes

During pregnancy, elevated levels of estrogen and progesterone may stimulate melanocytes to produce more melanin, leading to localized areas of hyperpigmentation. Avoiding sun exposure is recommended. After delivery, as hormone levels return to normal, some pigmentation may gradually fade naturally.

3. Ultraviolet Radiation

Due to hormonal changes, the skin becomes more sensitive to UV radiation during pregnancy, which can trigger or worsen pigmentation. Strict sun protection is essential, including the use of physical or chemical sunscreen, and minimizing outdoor activities.

4. Emotional Fluctuations During Pregnancy

Pregnant women may experience significant emotional changes due to physical transformations and shifts in social roles, potentially causing endocrine imbalances that affect melanocyte metabolism and distribution. Maintaining a positive mood, engaging in moderate outdoor activities, and communicating with family and friends can help stabilize emotions.

5. Nutritional Deficiencies During Pregnancy

Nutritional demands increase during pregnancy. Inadequate or unbalanced intake may lead to malnutrition, reducing the skin’s antioxidant capacity and making it more vulnerable to external damage, thus promoting the formation of pigmentation. A balanced diet rich in antioxidants such as vitamins C and E—found in fresh fruits and vegetables—is essential.

Pregnant women should maintain a healthy lifestyle, eat a balanced diet, reduce consumption of greasy and spicy foods, increase intake of vitamin-rich foods, and strengthen sun protection to prevent worsening of pigmentation.