The particular small flesh particles in the armpits may be caused by factors such as dermatomes, filiform warts, and so on. 1. skin flab: this belongs to the more common benign skin tumor disease, usually in the middle-aged and elderly people, and will appear in the neck and armpit and other parts of the fibrous tissue superfluous, and with the age and increase, the incidence of women is higher. The cause of the disease is still unclear, and may be related to obesity, diabetes, viral infections. 2. filiform warts: this is a special type of common warts, and the warts are elongated and protruding accompanied by apical keratinization, mainly due to human papillomavirus infection caused by the neck, forehead, eyelids, armpits and other parts of the body. Both skin warts and filiform warts have no adverse effect on health and can be removed by electrocautery, laser or freezing if necessary. There may also be other causes for particularly small underarm warts, so if necessary, you can cooperate with your doctor to improve the examination and determine the cause before handling and treating them.