Colds are associated with pathogenic bacterial infections. After pathogenic bacterial infections, the mucous membranes of the nasal cavity become congested and edematous, and after the capillaries in the nose are ruptured, the blood flows out with the nasal mucus, and so blood in the nasal mucus occurs.
After a cold patient is infected by pathogenic bacteria, after examination, it is seen that the mucous membrane of the nasal cavity and throat is congested and edematous, the secretion increases, and a small amount of bleeding exists after blowing the nose and coughing and other actions destroy the capillaries. Patients can use saline to clean the nasal cavity to improve the symptoms, if the nasal discharge with blood for a long time does not relieve the need to go to the local hospital as soon as possible, to clarify the cause of the disease.
It is recommended that patients actively cooperate with the doctor’s treatment after a cold, strictly in accordance with the doctor’s instructions for the use of medication, strictly prohibit the use of drugs, to prevent the emergence of serious adverse reactions.