Brief Answer:
A few reasons....

Detailed Answer:
Hi,

There are a few reasons for nasal bleeding (epistaxis). The commonest are high blood pressure and infection. Sometimes a dry nose as well as nose picking can cause nasal bleeding.

Besides these, other rarer cause include bleeding tendency.

Is he on any medications that increase bleeding episodes - medicines like aspirin and anticoagulant drugs (given post stroke and myocardial infarction)? If yes, they need to be considered as a cause too.

Hope this answered your question. Let me know if you need any other specific information.

Regards

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