Visit ER or doctor
A person with air going into the skin after a nose bruising may have a cracked bone at the nose or sinuses.
If he has trouble moving or closing an eye
, if pain is significant, or there is watery liquid dripping from the nostril
, he should see a doctor right away. Otherwise, a next-day visit with his primary or ENT doctor is needed. Meanwhile, he avoids blowing his nose. Antibiotics likely needed.
Answer assisted by Jin Packard, Medical Student