Symptoms of a rotator cuff tear include shoulder pain and a crackling sensation when moving the shoulder. You may feel pain even while the shoulder is at rest, as well as pain and weakness when lifting and lowering the arm. Most people experience pain at night and have trouble sleeping, especially when lying on the affected shoulder. If the tear is sudden, you may hear a snapping sound and have immediate weakness in the upper arm.
If you are experiencing any of these symptoms, you should seek medical treatment.