The key information about the seriousness after a head injury are

Loss of consciousness

Vomiting

Dizziness

Unsteady gait / balance

Drowiness / Sleepiness

These symptoms can occur within 72hrs of the injury. So simple pain killers to alleviate pains and rest and close monitoring for the above symptoms and signs is crucial.

If there is any suspicion of these complications occurring, CT scan of the head if the best test to do, never do or rely on skull X-rays because that practice is outdated and does not show the magnitude of the injury.

It is important that health professionals exercise extreme caution in giving head injuries patients Iv fluids or drips due to the risk of raising the intracranial pressure leading to drowsiness persistent vomiting and coma due to herniation of the brain through the hole of the spinal cord.