 [ Symptoms ] i had a cortisone injection in my shoulder 7 days ago how long before i know if it works  i was diagnosed with a partial tear in my rotator cuff doctor wanted to try cortisone injection first to see if would bring me relief it has been a week i only see a sight difference how long before i know if it will work [ Disease ] masturbation is not good for health and should be completely avoided if u stop it all other problems will go away automatically take symptomatic treatment till then health supplements will be helpful