This information is from healthatoz.com

Causes and symptoms

Nosebleeds may result from a number of different causes:

• local infections (colds, sinus infections)

• systemic infections (scarlet fever, typhoid fever, malaria)

• drying of the membranes lining the nose, often during heating season in colder climates

• medications, most commonly, overuse of nasal decongestant sprays

• trauma (from foreign objects in the nose; scratching or picking with the fingers; or blunt trauma to the face)

• tumors in the nasopharynx or paranasal sinuses

• cocaine abuse

• bleeding disorders (leukemia, liver disease, hemophilia and other hereditary clotting disorders)

As i sit here at my desk holding tissue to my nose, thinking to myself, what the hell were you doing?  A secondary thought crosses my mind.  Do you think anyone will think it was anything than digital spelunking that causes this injury?