The sensation of your arm beating like a heart is likely due to a nerve issue in your neck. This is a common occurrence, and you might not even experience any neck symptoms. The nerves in your neck can become irritated, leading to throbbing or pulsating sensations in your arm.
If you're experiencing this sensation, it's important to consult with a healthcare professional to rule out any underlying medical conditions.
Here are some other possible explanations for the sensation of your arm beating like a heart:
- Normal Heartbeat: You might be feeling your own heartbeat more strongly in your arm, especially if you have a larger artery there.
- Coronary Artery Spasm: This occurs when muscles in the artery wall squeeze, often in just one area. This can lead to chest pain and discomfort that can radiate to the arm.
- Atrial Fibrillation: This condition causes an irregular heartbeat, which can be felt as palpitations or fluttering in your chest or arm.
If you are concerned about any pain or discomfort in your arm, please consult a healthcare professional immediately.