Nose bleeds may be alarming, (after all, who wouldn\u2019t wince at the sight of blood dripping from their nose?) but they\u2019re also quite common. Technically known as epistaxis, nose bleeds usually aren\u2019t serious and will eventually clear up on their own. Sometimes, though, nose bleeds can be a concern. Here\u2019s when to worry\u2014and when to relax.\nWhat Causes Nose Bleeds?\nYour nose has many tiny, fragile blood vessels that can easily break. This usually results in a nose bleed, whether that means a few dots of blood on your tissue or a larger, messier bleed. Nose bleeds can have a number of causes, including:\n\nIrritation. Cold, dry air, as well as allergies, colds, and sinus problems can irritate delicate nasal passages.\nFrequent sneezing, picking at, or blowing your nose. Like the previous causes, these actions can rub against the nose, triggering a nose bleed.\nInjuries. These can include a broken nose or having an object stuck in your nose.\nDeviated septum. This physical disorder of the nose may make you more prone to nose bleeds.\nNasal decongestant sprays. Overuse of these products increases your chances of having a bleed.\n\nMore serious causes of nose bleeds include:\n\nHigh blood pressure\nA bleeding disorder\nUse of blood thinner or anticoagulant medications such as aspirin and warfarin (Coumadin)\nTumors of the nose or sinuses\n\nThese causes typically lead to chronic nose bleeds. If you experience repeated nose bleeds, you should contact your physician to determine the cause.\nBasic Nose Bleed First Aid\nMost nose bleeds will stop on their own, but some basic first-aid measures can help heal them more quickly. Try these tips at home:\n\nWhile sitting, squeeze the fleshy portion of your nose to close your nostrils. Stay in the position for 10 minutes or until bleeding ebbs.\nLearn forward. Tilting your head back may cause you to swallow blood. For this same reason, you shouldn\u2019t lie down during a nose bleed.\nApply ice. Hold an icepack to your nose while you wait for bleeding to stop.\nDon\u2019t use gauze. Avoid packing your nostrils with gauze, tissue, cotton, etc.\nGive it a rest. Try to keep yourself from sniffing, sneezing, and blowing your nose for at least several hours after a nose bleed.\nUse a humidifier and saline spray to moisten nasal passages and prevent future nose bleeds.\nIf bleeding persists for longer than 20 minutes following a head injury, go to the nearest Urgent Care facility or emergency room.\n\nTo learn more about treating nose bleeds and related conditions, visit the UPMC Ear, Nose, and Throat website.