11/22/2025
Numbness in your arm running from your shoulder down to your hands? 🤔
You could be dealing with Thoracic Outlet Syndrome (TOS) — a condition caused by compression of the nerves or blood vessels that pass between your collarbone and first rib. This compression can lead to numbness, tingling, weakness, coldness, or even swelling in the affected arm or hand.
TOS can be triggered by poor posture (especially forward head and rounded shoulders), repetitive overhead activities, carrying heavy bags, or even old injuries around the neck or shoulder. It’s common among people who sit long hours at a desk, athletes who do repetitive motions, and individuals with tight neck and chest muscles.
Treatment focuses on improving posture, releasing muscle tension, and restoring proper alignment of the shoulder and rib cage. Gentle stretching, nerve glides, and strengthening the postural muscles can help open up the space in the thoracic outlet and relieve pressure on the nerves and vessels.
💡 Tip: If your arm feels heavy or goes numb when lifting it overhead or during sleep, it’s time to pay attention — early management can prevent chronic nerve irritation and improve your daily function.
