When the arm is dislocated, symptoms such as pain, swelling, limited mobility, and elastic immobilization are usually present. 1. Pain: When the arm is dislocated there is secondary damage to the soft tissues around the joint, resulting in significant pain around the dislocated joint. 2. Swelling: When the arm is dislocated, there is often damage to the surrounding soft tissues or a small amount of bleeding, resulting in significant swelling of the dislocated joint. 3. Restricted mobility: a dislocated arm is a dislocation in the joint area, and the dislocated joint will have obvious impaired mobility. 4. Elastic fixation: When the arm is dislocated, the dislocated bone will be fixed in a certain position and cannot move, which is called elastic fixation. When the above symptoms or suspected dislocation of the arm, you should go to the hospital in time to improve the relevant examination, clear diagnosis and standardized treatment as prescribed by the doctor, so as not to delay the condition.