Can headaches cause a nosebleed?

If you suffer with migrain headaches they are known to cause nose bleeds. I have suffered with migrains for 15 years. I have a lot of nosebleeds. The nose bleed can be another symptom of what is causing the headache. For instance in the winter, dry air can cause dehydration, which causes headaches, and the dry air causes the nasal passages to be more susceptable to nose bleeds. High blood pressure can cause both symptoms.