What are the main causes of nosebleeds during menstruation?

The main causes of nosebleeds during menstruation include environmental factors and hormonal influences. Some female patients may experience nosebleeds during their periods. For example, if the weather is dry or if they drink less water during menstruation, the nasal mucosa may become dry, leading to rupture and bleeding of the nasal blood vessels. Nosebleeds during menstruation occur due to changes in hormone levels in the body, which cause engorgement of blood vessels in the nasal mucosa and increased fibrinolysis, thereby resulting in nosebleeds in women.