Headache, confusion, memory loss, dizziness, nausea vomiting
, slurred speech and fat
igue are common. Delayed symptoms include depression, irritability, sleep disturbances, seizures, loss of
smell etc. A doctor generally looks for focal neurological or generalized neurological symptoms that
would show there is a pressure on brain somewhere. In absence of
these symptoms and based on the history a diagnosis of
concussion is given.