Increased conduit vessel stiffness results in increased characteristic impedance of the aorta and decreased arterial compliance, which cause an increase in systolic blood pressure (SBP) and pulse pressure as well as a decrease in diastolic blood pressure (DBP).
Local trauma is the most common cause, followed by facial trauma, foreign bodies, nasal or sinus infections, and prolonged inhalation of dry air. Children usually present with epistaxis due to local irritation or recent upper respiratory infection (URI).
Nose Bleed epistaxis cause and treatment July 17 2017 by Ray Sahelian, M.D. Nose bleeding is known by the medical term epistaxis. An obvious symptom of nosebleed is blood coming down the nostril, most often it is one sided. Epistaxis is one of the commonest ENT emergencies.