Avoid using
decongestant drops/sprays such as oxymetazoline or xylometazoline just for irritation. They can worsen dryness and should not be used for more than 5 days because they may cause rebound congestion, as the
NHS advises.
Seek medical advice promptly if there is persistent nosebleeding, crusting/pus, severe pain, facial swelling, fever, or symptoms lasting more than about 1 to 2 weeks.