Hi, My son have an white patch on his hand and neck. first we found on hand later it went till neck, but now still it's growing. when he took birth we have not observed after 7 days of his birth we seen a tiny white dot but we ignored, but now its started growing. we consulted doctor, they informed it may go without treatment.qnd suggest Cetaphil moisturizer lotion. please any suggestions on this,why it's growing and any immediate precautions should take on this or not?