Differential Diagnosis for Anterior Left Shoulder Pain with Popping Sensation then Pain
- Single most likely diagnosis:
- Subluxation or dislocation of the shoulder joint: This is the most likely diagnosis given the symptoms of a popping sensation followed by pain, which is consistent with the mechanical disruption of the joint.
- Other Likely diagnoses:
- Rotator cuff strain or tear: The rotator cuff is a group of muscles and tendons surrounding the shoulder joint, and injuries to this area can cause pain and a sensation of instability or popping.
- Labral tear: The labrum is a cartilage structure surrounding the socket of the shoulder joint, and a tear in this area can cause pain and a popping sensation, especially with certain movements.
- Bicipital tendinitis: Inflammation of the tendon of the biceps muscle, which runs through the shoulder joint, can cause anterior shoulder pain and may be associated with a popping sensation.
- Do Not Miss diagnoses:
- Pulmonary embolism: Although less common, severe chest or shoulder pain can be a presentation of a pulmonary embolism, especially if the pain is sudden and severe. It's crucial to consider this diagnosis, especially in patients with risk factors.
- Myocardial infarction: Similar to pulmonary embolism, myocardial infarction (heart attack) can sometimes present with shoulder pain, particularly if the pain is radiating or associated with other symptoms like shortness of breath or chest discomfort.
- Rare diagnoses:
- Pancoast tumor: A rare type of lung cancer that can cause shoulder pain due to invasion of the brachial plexus or other structures in the shoulder region.
- Thoracic outlet syndrome: A condition involving compression, injury, or irritation of the nerves and/or blood vessels (arteries and veins) in the thoracic outlet area, which can cause pain in the shoulder and arm.