What does it mean when bruising appears after a shoulder and neck massage?

Generally speaking, the appearance of sha (petechiae) after a neck and shoulder massage indicates excessive dampness in the body, but it could also result from improper technique. The specific analysis is as follows:
Massage is a therapeutic method classified into health-maintenance massage, sports massage, and medical massage. In most cases, the appearance of sha following neck and shoulder massage may be due to insufficient clothing or frequent exposure to high-humidity environments, leading to an accumulation of dampness in the body. This dampness can block the meridians around the neck and shoulders, resulting in the aforementioned condition, which is considered a sign of detoxification. Alternatively, sha might occur due to incorrect massage techniques or excessive pressure, causing rupture of subcutaneous capillaries, often accompanied by pain. This type is usually not serious and resolves with proper rest.
It is advisable to engage in regular physical activity, avoid maintaining the same posture for prolonged periods, and seek professional massage treatment at a hospital when experiencing neck and shoulder discomfort.