Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency care for uncontrolled bleeding, a serious head injury, difficulty breathing, a seizure, blue or grey skin, or unusual difficulty waking a baby or child.
These signs are not typical effects of an ear-shape difference and may indicate a separate emergency.
Contact a healthcare service the same day if the outer ear becomes red, hot, swollen, or increasingly painful, especially after a piercing or injury.
Fever, pus, or rapidly spreading redness also needs prompt assessment.
A soft or firm swelling that appears after a blow to the ear should be assessed the same day.
It may be an auricular hematoma and can require drainage.
Arrange a routine appointment if you notice a congenital ear difference that has not been assessed, particularly if the ear canal appears narrow or closed.
Also book an appointment for concerns about hearing, speech development, repeated drainage from an ear pit, or changes that are affecting confidence or daily life.
Every sign above is quoted from the sofidex article on Low-set ears and pinna abnormalities. If you are not sure, err upward — it is always reasonable to be checked.