Flat warts are benign skin proliferations caused by a viral infection in women, most often due to the human papillomavirus, and typically occur on the face or upper limbs. When they occur, they generally have no impact on pregnant women, and the patient usually does not feel any discomfort. After bodily adjustment and an increase in immune resistance, they may also naturally regress. This virus does not enter the body through the placenta, so it does not affect the fetus, and there is no need for excessive worry.