Cupping location swelling is generally a normal reaction, and the negative pressure generated by the cupping itself.
Cupping is through the pumping, heating and other ways, resulting in negative pressure inside the tank and generate suction, so that the tank can be adsorbed on the body surface, thus playing the effect of regulating the function of internal organs. If you stay too long, or negative pressure suction is too large, it is easy to lead to water in the blood vessels run to the tissue, the location of the mouth of the can will be higher than other parts.
Skin swelling after cupping will generally recover in a short period of time, no need to worry too much. If the swelling of the skin cannot subside, or other adverse reactions occur, you should seek medical advice.
It is recommended to go to a professional medical institution for cupping treatment, so as to avoid improper sterilization of cupping equipment or improper operation, which may lead to local infections and skin ulcers.