Thanks for writing your query.
Blood mixed nasal discharge can occur in Rhinitis
or runny nose. It can be due to bleeding of some small blood vessels in the nasal cavity
. You should not worry about it. Take antihistamines with decongestants after getting yourself examined by an ENT specialist
. Use saline nasal drops as it prevents dryness of the nasal cavity.
If excess bleeding occurs use of ice application will help and contact Emergency department.
I hope this is useful to you.