Thoracic Outlet Syndrome
NERVE & VASCULAR COMPRESSION
Thoracic outlet syndrome occurs when nerves or blood vessels are compressed between the collarbone, first rib, and surrounding muscles. It can cause arm pain, numbness, weakness, swelling, or circulation changes that need careful evaluation.
- Arm pain, numbness, or tingling
- Weakness, heaviness, or fatigue
- Swelling or color change may occur
- Evaluation depends on symptom pattern
Evaluation & Next Steps
- Clear severity assessment and next steps
- Supportive care and recovery guidance
- Care across 4 Las Vegas locations
Call: (702) 703-4340
Hours: Mon–Fri: 8am–5pm
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Quick Summary
Key takeaway: Thoracic outlet syndrome can involve nerve, vein, or artery compression near the shoulder and upper chest. Symptoms may affect the arm, hand, shoulder, neck, or circulation.
Evaluation focuses on the type of compression, symptom triggers, vascular findings, and whether conservative care, imaging, monitoring, or additional treatment planning may be needed.
Overview
What is Thoracic Outlet Syndrome?
Thoracic outlet syndrome describes compression of nerves or blood vessels as they pass through a narrow space between the neck, collarbone, first rib, and upper chest muscles.
Why Evaluation Matters
Symptoms can overlap with neck, shoulder, nerve, and vascular conditions. Evaluation helps identify whether the problem is nerve-related, vein-related, artery-related, or caused by another condition.
Symptoms
Symptoms depend on which structures are compressed and what positions or activities trigger them. Some people notice nerve-type symptoms, while others develop swelling, heaviness, or circulation changes.
Arm or Hand Numbness
Tingling, numbness, or pins-and-needles symptoms may travel into the arm, hand, or fingers.
Weakness or Fatigue
The arm may feel heavy, weak, tired, or difficult to use during overhead activity or repeated motion.
Swelling or Color Change
Vein or artery compression may cause arm swelling, bluish color, coolness, or visible circulation changes.
Neck, Shoulder, or Chest Discomfort
Pain or pressure may occur around the neck, shoulder, collarbone, upper chest, or upper back.
Seek care now if…
Seek prompt evaluation if arm swelling is sudden, the hand becomes cold or pale, weakness is worsening, severe pain develops, or symptoms suggest a possible blood clot or circulation problem.
Causes & Risk Factors
Thoracic outlet syndrome can develop when anatomy, posture, muscle tightness, injury, repetitive motion, or vascular compression narrows the space where nerves and vessels travel.
Common Causes
- Nerve compression near the shoulder
- Vein compression with arm swelling
- Artery compression affecting circulation
- Muscle or posture-related narrowing
The exact cause depends on which structure is compressed and whether symptoms are related to anatomy, activity, trauma, or vascular changes.
Risk Factors
- Repetitive overhead activity
- Prior neck or shoulder injury
- Athletic or work-related strain
- Anatomic narrowing or extra rib
- Poor posture or muscle imbalance
- History of arm swelling or clot symptoms
Diagnosis
Diagnosis starts with a symptom review, physical exam, and assessment of whether nerve, vein, or artery compression is suspected. Imaging or vascular testing may be recommended based on findings.
Typical Evaluation
- Symptom and activity review
- Neck, shoulder, and arm exam
- Pulse and circulation assessment
- Ultrasound when vascular symptoms are present
- Additional imaging when needed
What to Bring
- Prior imaging or test results
- Symptom triggers and positions
- History of injuries or clots
- Work, sports, or overhead activity details
- Current medications
Treatment Options
Treatment depends on whether symptoms are nerve-related, vein-related, artery-related, or mixed. Care may include activity changes, therapy, vascular monitoring, imaging, or treatment planning when compression is significant.
Related care: Treatment planning may include vascular ultrasound, imaging review, activity modification, physical therapy, or specialist evaluation when blood-flow or clot concerns are present.
Risk Management
- Activity trigger review
- Posture and movement changes
- Work or sport modification
- Risk-factor review
Monitoring & Symptom Protection
- Symptom tracking
- Arm swelling monitoring
- Circulation checks
- Clot warning awareness
Vascular / Image-Guided Treatment
- Vascular ultrasound
- Advanced imaging when needed
- Specialist treatment planning
- Procedure discussion if indicated
Follow-Up Evaluation
- Sudden arm swelling
- Color or temperature change
- Worsening weakness
- Possible clot symptoms
Recovery
Recovery and long-term management depend on the type of thoracic outlet syndrome, severity of compression, activity triggers, and whether vascular involvement is present.
What Helps Most
- Accurate diagnosis: Identify whether symptoms are nerve, vein, artery, or mixed.
- Activity changes: Reduce positions or motions that trigger symptoms.
- Therapy guidance: Address posture, mobility, and muscle support when appropriate.
- Vascular monitoring: Watch swelling, color, and circulation changes.
- Follow-up care: Recheck symptoms when they persist or progress.
When to Follow Up
- Arm swelling worsens: New or increasing swelling should be evaluated.
- Color changes appear: Blue, pale, or cold hand symptoms need attention.
- Weakness progresses: Increasing weakness or loss of function should be checked.
- Pain limits activity: Persistent pain with work or overhead motion may need evaluation.
- Symptoms suggest a clot: Sudden swelling or heaviness should be addressed promptly.
Frequently Asked Questions
Thoracic outlet syndrome occurs when nerves or blood vessels are compressed near the collarbone, first rib, and upper chest muscles.
Symptoms may include arm pain, numbness, tingling, weakness, heaviness, swelling, or color change. The pattern depends on whether nerves, veins, or arteries are involved.
Yes. Some forms can affect veins or arteries and may cause swelling, bluish color, coldness, heaviness, or other circulation-related symptoms.
Diagnosis may include a symptom review, physical exam, circulation checks, ultrasound, or additional imaging depending on the suspected type of compression.
Some patients improve with activity changes, posture work, therapy, and monitoring. Vascular involvement or worsening symptoms may require additional evaluation.
Seek evaluation if symptoms are worsening, arm swelling appears suddenly, the hand becomes cold or discolored, or weakness is increasing.
Locations
LVVIS offers vein evaluation and treatment planning at multiple Las Vegas locations. Choose the office that is most convenient when scheduling your visit.
LVVIS West Side Consultation Office
8930 W Sunset Rd, Suite 350
Las Vegas, NV 89148
Consultations and vascular evaluations
LV2 Limb & Vascular Division
8930 W Sunset Rd, Suite 350
Las Vegas, NV 89148
Limb preservation and podiatry partnership care
LVVIS East Procedure Office
2250 E Flamingo Rd, Suite 100
Las Vegas, NV 89119
Procedures, diagnostics, and circulatory care
LVVIS West Side Surgical Center
6120 S Fort Apache Rd, Suite 100
Las Vegas, NV 89148
Advanced vascular and interventional procedures