If you suddenly feel a followed by dizziness or hearing loss, stop everything. You may have just perforated your eardrum or created a perilymph fistula (a leak of inner ear fluid). Do not put drops in. Do not Valsalva. See an ENT within 24 hours.
For infants and toddlers, have them drink from a bottle or pacifier during altitude changes to ensure they are swallowing. When to See a Doctor
A device available at pharmacies consisting of a small balloon and a nose piece. By blowing the balloon up with the nose, pressure is regulated to open the Eustachian tubes. This is often recommended for children.