Can influenza cause nosebleeds? Indeed, it is possible for influenza to lead to nosebleeds. This is because influenza typically presents with severe systemic symptoms, such as high fever and elevated body temperature. These symptoms can cause an accelerated breathing rate, making the air passing through the nasal passages warmer. 

As a result, the moisture level of the nasal mucosa decreases, which can make it more fragile and prone to bleeding. Additionally, patients with influenza often experience coughing and sneezing, which further increases venous pressure in the head and face, thereby raising the likelihood of nosebleeds.

Apart from these factors, influenza can also lead to inflammation and congestion of the nasal mucosa, further compromising its barrier function and making it more susceptible to irritation and bleeding. During high fever, blood viscosity may also change, potentially exacerbating the risk of nosebleeds. 

Moreover, patients with influenza may frequently blow their nose due to discomfort, which can mechanically irritate the nasal mucosa and increase the risk of bleeding. Certain medications used during influenza, such as anticoagulants, may also heighten the risk of bleeding. Overall, while nosebleeds are not a common symptom of influenza, the systemic symptoms and associated nasal issues can indeed lead to nosebleeds.