Why does cupping produce water?

Cupping may cause water leakage due to capillary dilation, dampness discharge, skin damage and other reasons.

1. Capillary dilation

Cupping, because the negative pressure generated by cupping will promote the expansion of capillaries under the skin, at this time the permeability of blood vessels will increase, which may cause some liquid to seep into the tissue gap and form watery liquid.

2. The excessive dampness discharge of

patients during cupping, due to the stimulation of cupping on specific acupoints, may promote the discharge of dampness, resulting in skin exudation.

3. Skin damage

Cupping for too long or cupping error, will cause skin damage, because the skin bears greater pressure, may form water or blisters.