Underarms may be soft fibroids, neurofibromas, filiform warts and other causes, need to be analyzed through the clinical manifestations of specific. 1. soft fibroma: due to the axillary local skin relaxation, friction leads to dermal connective tissue proliferation, in the role of gravity gradually sagging, and then the formation of small meat grips or meat particles, belonging to the benign hyperplasia. 2. Neurofibroma: mostly asymptomatic, but can also be accompanied by significant pain, the skin is often accompanied by coffee-like pigmentation, lumps can be as breast-like hanging. 3. Filiform warts: armpit local human papilloma virus infection, stimulate epidermal cell proliferation, gradually formed in the skin surface protruding from the small meat grips that filiform warts, with a certain degree of contagious.