What is a sign that a nosebleed may require further medical attention?

A nosebleed that persists beyond 20 minutes is a clear sign that further medical attention may be necessary. Normally, most minor nosebleeds will resolve within a few minutes with appropriate self-care measures, such as pinching the nostrils together and leaning forward to avoid swallowing blood. However, if bleeding continues for an extended period, it can indicate a more serious underlying issue, such as a broken blood vessel, clotting disorder, or other medical condition that needs professional evaluation and treatment.

While feeling faint can also be a concerning symptom, it may not always correlate directly to the severity of the nosebleed itself. It is crucial to monitor the situation closely: persistent bleeding typically requires immediate medical intervention to prevent complications, while brief and minor episodes can often be managed effectively at home. The fact that a nosebleed stops within 5 minutes suggests that it is likely not severe, and the absence of blood indicates that there is no need for concern in that context.