Hi, i m 23 years old. about a.month ago I started having occasional upper back/base of the neck stinging pain mostly when I sitted for long periods of time while trying to maintain a good posture. Recently, this pain has become more often and not related to the activity mentioned before. Also, now it associates to fifth right finger numbness (and only this finger) with stinging and almost constant elbow pain as well ( on its medial aspect). There is no history of trauma.