I have chronic calcific tendinitis in my left shoulder, and the GP is suggesting that I get a steroid injection into the joint. I've a feeling I've heard a horror story of someone getting a six month ME crash due to one of those, although when I've asked about it in the fibro community, people have been positive. Does anyone know more about the risks? The tendinitis has been present on and off since 2010, so I doubt it's going away any time soon. I've also had calcific tendinitis in my right shoulder, but that was an acute case which only lasted a month and never came back. Also, does anyone know more about why I should be getting calcium building up in my tendons to begin with? I'm fairly young to be getting it, early thirties.