1 Trochlear Nerve (Cranial Nerve IV) - Injury to the trochlear nerve can cause vertical diplopia on looking downward which improves with contralateral head tilt and worsens with ipsilateral head tilt. 2  Abducens Nerve (Cranial Nerve VI) - In a complete injury of the abducens nerve, the affected eye is turned medially. Trochlear Nerve (Cranial Nerve IV) - Injury to the trochlear nerve can cause vertical diplopia on looking downward which improves with contralateral head tilt and worsens with ipsilateral head tilt. 2  Abducens Nerve (Cranial Nerve VI) - In a complete injury of the abducens nerve, the affected eye is turned medially.
Even a minor bump can cause a large goose egg. To reduce the swelling, apply ice to the injury as soon as possible. Although the swelling usually goes away within a few days, skin discoloration may persist for one to two weeks. If you're still concerned about your child's head injury, even if it seems minor, you should contact your doctor. Source(s):
+1 vote! Treat a goose egg with ice to reduce swelling. Monitor for any sign of woosiness, sleepiness, or nausea as a possible indication of greater mild brain injury that may warrant a doctor's attention. Unrecognized internal bleeding on the brain can be dangerous and may require a CT or MRI. Ct.