Nosebleeds are common. Among children and young adults, nosebleeds usually originate from the septum (the bone in the middle of the nose), just inside the nose. The common causes of nose bleed are spontaneous, Hypertension, & Thickened blood vessel. The immediate measures that need to be done are Sit upright and lean forward. Sitting straight, you reduce blood pressure in the veins of your nose. This reduces further bleeding. Sitting forward will help you avoid swallowing blood, which can irritate your stomach. Pinch your nose. Use your thumb and index finger and breathe through your mouth. Continue to pinch for five to 10 minutes. This maneuver reduces pressure of the bleeding point on the nasal septum and often stops the flow of blood. To prevent re-bleeding after bleeding has stopped, don't pick or blow your nose and don't bend down until several hours after the bleeding episode. Keep your head higher than the level of your heart. If re-bleeding occurs, blow out forcefully to clear your nose of blood clots and spray both sides of your nose with a decongestant nasal spray containing oxymetazoline (Afrin, Neo-Synephrine, others). Pinch your nose in the technique described above and see the doctor. If the bleeding lasts for more than 20 min seek medical help.