Can a pinched neck upper back nerve cause a lack of circulation and or redness of skin?

Yes, a pinched nerve in the upper back can potentially lead to circulation issues and skin changes, including redness. When a nerve is compressed, it may disrupt normal blood flow to the surrounding tissues, leading to symptoms like altered skin color or temperature. Additionally, the nerve's role in regulating blood vessels can be affected, further contributing to these issues. However, it's essential to consult a healthcare professional for a proper diagnosis and treatment.