We are continually learning that we really don't understand that much about brain injuries. Sometimes symptoms show up years later that are probably related to the initial injury.
If you were to receive trauma to the same area again it may cause similar symptoms to return. Depending on the severity of the trauma, symptoms may persist for some time.
Advice and opinions given are based on the information provided and must not be considered an official medical recommendation. The limitations of the internet prevent an appropriate evaluation. Always consult your doctor if there is concern.