Frequent nosebleeds, known as epistaxis, can be caused by several factors, including dry air, nasal trauma, allergies, and underlying health conditions like high blood pressure or blood clotting disorders. Dry air can lead to nasal dryness and cracking of blood vessels, making them more prone to bleeding. Trauma from nose picking or aggressive blowing can also trigger nosebleeds. Allergies and sinus infections cause inflammation that may exacerbate nasal bleeding. If nosebleeds occur frequently or are severe, consulting a healthcare provider is recommended to determine the underlying cause and appropriate treatment.