Little red dot on her boyfriend's neck is not acne, but inside her skin. Is it a hickey? The strawberries I planted for him before were all dark purple.

The first situation: the weather is very hot, even if you scratch a few hands, it will happen, because the force is too strong and the capillaries are damaged, resulting in local punctate congestion, irregular, scattered and not very round.

In the second case, if the punctate blood spots gather into a circle, it may be a hickey. The hickey area is small but concentrated, and the bleeding point is obviously regular.