The child needs to be taken to the doctor in the following cases.
A persistently increasing number of petechiae on the skin and mucous membranes of the extremities in a child without collision or trauma, etc.
Bleeding from the mouth or nose that does not stop for more than 15 minutes, or bleeding from other areas that cannot be stopped by conventional pressure.
In addition to bleeding spots on the skin and mucous membranes, accompanied by other symptoms such as fever and malaise.