Which symptom is commonly reported in thoracic outlet syndrome during overhead activities?

• A. Increased range of motion in the shoulder
• B. Heaviness and tiredness in the upper extremities
• C. Random episodes of joint swelling
• D. Localized pain in the lower back

Answer: (B)

Heaviness and tiredness in the upper extremities is a commonly reported symptom in thoracic outlet syndrome, particularly during overhead activities. This condition occurs when the blood vessels or nerves between the collarbone and the first rib are compressed, often exacerbated by positions that put stress on these structures, such as lifting the arms overhead.

When performing overhead activities, the muscles and nerves in that area can become irritated or compromised due to the decreased space caused by structural compressions. This can lead to symptoms such as heaviness, fatigue, or weakness in the arms, as the affected nerves (like the brachial plexus) may struggle to effectively transmit signals, while blood flow may be compromised, causing a feeling of tiredness or heaviness.

While the other choices may represent symptoms of other conditions, they are not typically associated with thoracic outlet syndrome in the context of overhead activities. Increased range of motion in the shoulder and localized pain in the lower back are unrelated to the specific mechanisms of thoracic outlet syndrome. Random episodes of joint swelling may suggest other inflammatory or systemic conditions rather than the mechanical compression characteristic of thoracic outlet syndrome. Thus, the experience of heaviness and tiredness distinctly aligns with the pathophysiology of thoracic outlet syndrome