There are two possibilities. First, it may be caused by scalding the skin after the towel is too hot. Second, it may be that the local capillary dilatation after hot compress obviously leads to bleeding. In addition, the possibility caused by other factors is not ruled out for the time being. It depends on the actual situation of your affected part and then make the corresponding auxiliary examination results to decide. Therefore, I suggest that you consult a doctor after seeing a doctor in the otolaryngology department, and then carry out targeted treatment.