What causes a mole to suddenly grow larger?

Generally, a mole suddenly growing larger may be caused by factors such as puberty development, hormonal changes during pregnancy, benign proliferation of pigmented nevi, skin inflammation, or increased activity of melanocytes. It is recommended to seek medical attention promptly, identify the underlying cause, and receive appropriate treatment under a doctor's guidance. Specific analyses are as follows:

1. Puberty development: Fluctuations in hormone levels during puberty can stimulate melanocyte proliferation, leading to enlarged moles. This is a normal physiological change that does not require special treatment—regular observation of the mole’s shape and color changes is sufficient.

2. Hormonal changes during pregnancy: Elevated estrogen and progesterone levels during pregnancy increase melanocyte activity, which may cause moles to enlarge. Keep the area clean and avoid friction or irritation. After delivery, when hormone levels stabilize, some moles may stop growing or even shrink.

3. Benign proliferation of pigmented nevi: Natural proliferation of mole cells causes gradual enlargement without other abnormal symptoms. If there are cosmetic concerns or discomfort, consult a doctor for carbon dioxide laser mole removal. This procedure uses laser energy to eliminate mole tissue, offering minimal invasiveness and quick recovery.

4. Skin inflammation: Inflammatory conditions such as folliculitis or eczema around the mole can release inflammatory factors that stimulate melanocyte growth, resulting in a larger mole. First, treat the primary inflammation according to medical advice using topical medications such as mupirocin ointment, fusidic acid cream, or compound polymyxin B ointment. Monitor changes in the mole after the inflammation resolves.

5. Active pigment cell growth: When melanocytes become highly active with potential for malignant transformation, signs include rapid growth and unclear borders. Immediate medical consultation is required for surgical excision. The mole and surrounding tissue should be completely removed surgically to prevent cell spread, and the excised tissue should be sent for pathological examination to determine its nature.

In daily life, avoid repeatedly touching or squeezing moles to minimize irritation. Practice sun protection outdoors to prevent prolonged UV exposure to moles. Perform regular self-examinations; if uneven color, irregular shape, or other abnormalities appear, seek medical attention promptly.