The neck side feel a small ball consider with filiform warts, folliculitis, cervical lymphadenitis, malignant tumors and other diseases related. 1. Filiform warts: a disease caused by infection with the human papilloma virus, which can be felt on the side of the neck with a small ball-like changes. At this time, it can be treated by some liquid nitrogen freezing. 2. Folliculitis: when the local pores are blocked, it can cause acute inflammation of the hair follicles, manifesting small pimple-like protrusions, and mild localized swelling and pain symptoms. 3. Cervical lymphadenitis: when the upper respiratory tract, oral pharynx, gums inflammation, can lead to bacterial infection, the formation of cervical lymphadenitis, resulting in cervical lymph node enlargement, manifested in the neck as a small pimple-like protuberance, appearing when the pressure of the pain symptoms. 4. Malignant tumors: such as thyroid cancer, lymphatic system, blood system tumors, etc., the tumor cells invade the lymph nodes in the neck, resulting in abnormal proliferation and enlargement of lymph nodes in the neck, forming pigeonhole-like changes. You should pay attention to a light diet, regular work and rest, and avoid staying up late. If the pigeonhole-like changes persist and do not subside, it is recommended to go to the hospital as soon as possible to avoid delaying the condition.