Maybe there's something wrong with the capillaries. Capillary may be blocked for some reason (inflammation, foreign body, etc.). ) and the blood flow is not smooth, so cyanosis will occur. Off-topic words, just like those purple marks left between some lovers, may also be left by external forces ... just didn't pay attention at that time! Anyway, it should be related to capillaries ... it promotes blood circulation when delivering water, so it may get better ... in fact, as long as there are no obvious symptoms, it will be fine! Attention should be paid to this situation to see if it is caused by poor local blood circulation, and some drugs to promote blood circulation can be used to treat it.

Mainly related to blood circulation, generally not the manifestation of disease, and may have a certain relationship with heredity. Don't worry, it's okay!