Summarize this article in one sentence.
Hives, rash, a swollen face or lips, difficulty breathing, and a light-headed sensation may be signs of a life-threatening allergy. If you notice these symptoms, call for help immediately. This includes a bloody nose, runny nose, crusty nostrils, or loud breathing. Tell your doctor when the symptoms began and how long they lasted for. Other adverse reactions to Flonase include headache, nausea, vomiting, or dizziness. Call your doctor if you notice these symptoms. Flonase may cause serious side effects if taken with certain medications. If your doctor wants to prescribe a new medication, tell them that you are taking Flonase. For example, Flonase may interact with some antifungal drugs or antiviral medication for the treatment of HIV/AIDS. While rare, steroids, like Flonase, may stunt children’s growth. Keep an eye on your child’s growth while they are taking Flonase. If your child stops growing or if you have any concerns, talk to their doctor. Generally, children shouldn't be using Flonase long enough for it to stunt their growth. Talk to your doctor if you're concerned that your child has been on Flonase for an extended period of time.

Summary:
Get emergency care if you get hives or another allergic reaction. Call your doctor if you have any pain or discharge around the nose. Avoid taking new medications without your doctor's approval. Monitor your child’s growth if they are taking Flonase.