The symptoms vary according to the site and extent of the injury. Brain concussion usually, but not always, produces unconsciousness. The return to consciousness often occurs gradually. Following the initial injury, there may be headache, difficulty in concentrating, nausea, vomiting, difficulty in focusing, and a feeling of depression and irritability. A physician should be consulted in all cases of concussion because there may be more serious brain damage.
Bed rest is essential for at least a day after the injury.
The physician may prescribe painkillers to relieve the headache. Alcohol, sedatives, and tranquilizers may aggravate the symptoms. The patient should avoid sports and work until he or she is completely recovered. The key sign is level of consciousness. Other signs include unequally dilated pupils, an inability to feel or move some body part, or persistent vomiting.