fat tumors are also called lipoma. when the lipoma are multiple,it is caled lipomatosis
. it can be confirmed by FNAC, a test in which a small needle will be pricked into one of those swellings and material aspirated will be examined under a microscope. not at all a serious problem except cosmetically. surgery is a treatment option but is reserved for only those swelling which are either interfering with your daily routine, or are painful/ prone to trauma or for cosmetic reason. unfortunately there is no treatment to stop them from increasing in size or number.