 [ Symptoms ] i injured myself during a rugby game now have sudden onset breathlessness [ Disease ] since you have had this injury a long time ago with no effect on breathing over a 19 month period …i do not think it is related the initial injuries was mostly contusions and they have gone but your shoulder stiffness must have been treated as you are so young to live with such problem the current breathing difficulty is related to the recent chest infection as the vital capacity decreases with chest infections and you need rehabilitation with breathing exercise diaphragmatic and incentive spirometer device training