FAQ – Nasal Discharge – Blood / Pus

Here are a few articles on blood in the nose:

https://thehorse.com/17334/equine-epistaxis-what-you-need-to-know

https://thehorse.com/128355/bleeding-from-the-ears-nose-or-mouth

Because one possible cause of blood from the nostril includes guttural pouch mycosis (fungal erosion into the internal carotid artery), we would consider any nosebleed to be an urgent issue – especially if the bleeding is significant (not just a small drip).

Here is an article on pus coming from the nose:

https://thehorse.com/120550/one-sided-runny-nose-is-sinusitis-to-blame

The number one cause of unilateral (one-sided) nasal discharge is sinusitis secondary to tooth root abscess. This cannot be determined from oral exam alone.