Hickey's professional medical disease is called "mechanical purple spot", which is mainly caused by the rupture and bleeding of subcutaneous microvessels under strong suction. The most common is the neck. On the one hand, it is because this area is a "sensitive area" that partners will definitely use for intimacy, and the skin in this area is relatively thin. If kissing is very intense, it is easy to leave obvious marks.

The hickey usually disappears automatically in about four to seven days, and the doctor will suggest applying it with a warm towel two or three times a day for three to five minutes each time to "promote blood circulation and remove blood stasis". The doctor also reminded that it is difficult to eliminate the hickey immediately, and the best way is to "control the strength" to prevent the hickey.