I have frequent nosebleeds. What causes it and is it normal?

Though most nosebleeds are mild and benign, they shouldn’t happen. Experts weigh in on when to see a doctor

If you frequently experience nosebleeds, you might come to regard them as nothing more than a messy inconvenience.

Yet, even though most nosebleeds are mild and benign, they shouldn’t happen “if everything inside the nose is healthy”, says Dr Patricia Loftus, an otolaryngologist at the University of California, San Francisco.